Today, I went inside the new Craigslist purchase 800DP 4780 carb to look around. Squeaky clean inside too:thumbsup:

Stock setup should be (frt/rear) 72/76 jets, 6.5/8.5 power valve, not sure what the stock squirters it comes with....

I found (frt/rear)
76/84 jetting, 4.5/blocked PVs, 31/37 squirters, 30cc/50cc accelerator pumps, red/brown accelerator pump cams, and the choke removed.

All this points to a big-cam car, big inch, low idle vacuum 10-11' big long squirt for the secondaries with a 37 squirter and the 50cc pump....I'd say this looks like a good set for a race-only 454.....maybe a bit much for RatVette...probably a good street set for a Berg car.....:D

I am thinking I should run a 6.5 PV for the front suitable for my 13' vacuum and 72 (the set from the front of my 3310) or possibly
74 jets...76 seems pretty fat..... though I do not know what you all run.

I know most guys plug the secondary PV and jet up (usual start is +10 from the primaries) .....84 secondary jetting sounds right.
Not sure about the 50cc rear acc pump, the squirter sizes, and acc pump cams.....

Your comments and set-up suggestions most welcome.
What are you guys running? carb#/jets/PVs, squirters, acc pump cams?
Likely place of duty for this carb is upon RatVette

BTW, does anyone have a cure for Holleys that the needle and seat threads are stripped out?

Thanks in advance

George

72/84 6.5/plug
stock pump cams,not sure of color right now.
31/31 shooters or maybe even 28/31.......yes 28.

from mortec

4780 800 (F)72,(R)76 6.5,8.5 4150
4780-1 800 (F)70,(R)76 6.5,8.5 4150
4780-2 800 (F)70,(R)85 6.5 blocked 4150
4780-3 800 (F)71,(R)85 6.5 blocked 4150
4780-4 800 (F)71,(R)85 6.5 blocked 4150
4781 850 (F)80,(R)80 6.5,6.5 4150
4781-1 850 (F)80,(R)80 6.5,6.5 4150
4781-2 850 (F)80,(R)80 6.5,6.5 4150
4781-3 850 (F)80,(R)78 6.5,6.5 4150
4781-4 850 (F)80,(R)78 6.5,6.5 4150
4781-5 850 (F)80,(R)78 6.5,6.5 4150

72/84 6.5/plug
stock pump cams,not sure of color right now.
31/31 shooters or maybe even 28/31.......yes 28.

x2
with my 750 on my 396 it's 4.5/ block and 74's and 84's and 31/31 runs great

George how in the world did you post this here?:D Kind of a low traffic area, my 48 is over tomorrow morning when I go home I'll look at the spec sheet for my 950 hp and get back to you on what I have. You may need to replace the bowls.

George how in the world did you post this here?:D Kind of a low traffic area, my 48 is over tomorrow morning when I go home I'll look at the spec sheet for my 950 hp and get back to you on what I have. You may need to replace the bowls.

Aukai,
I let my friends here in the NW take a shot at it...because I know them, what they have, how hard they run. Quite a following here for the 800DP. If I do not get answers locally, then I go national. Quite a few very bright guys nationally too. Check back tomorrow, there will be some good settings from the NW guys.
Replace the bowls? I think you mean squirters, right? They do seem pretty aggressive.....

Paul,
I cannot recall what cam your 396 has. I have always had good luck with the 6.5 PV. Who set you up with a 4.5 PV? Is your idle vacuum 9-10" Hg?
My 427 idles at 13" Hg....so a 6.5 is appropriate.

Dangerous Dan,
I listed the stock specs right off the MORTEC page since I do not have a Holley catalog here. Mortec does not list the squirter sizes or acc pumps.
Looks like my carb has been plussed-up with the squirters, rear acc pump, and a bit fatter jetting.

:noway: per your post the needle and seats threads are shot:D:rolleyes:

:noway: per your post the needle and seats threads are shot:D:rolleyes:

Oh, that 3310 needs new bowls. Got it now:thumbsup:.....thought you were talking the 800. :cool: Yup, got a replacement front bowl off a pals 'carb fire' 750 DP. The 750's back bowl has all the acc pump stuff....., not appropriate for my 3310. For Ss and Gs, I may find an appropriate tap..... but not anytime soon. No, the 3310 is not headed to the dumpster yet....but it will not be a carb of choice for track day.....
Gads, replacement bowls are STUPID EXPENSIVE!!!! They sure are proud of their product

OK, waiting for Kevin, Doc, Greg, other Greg, Brett, BrYan, BrIan, Mike the 66SS Fan, loader1 Mike, Frank, Elky Ben, S-W Ben, Yanni, '69Brian, Sick 66, Craig, Kyle (hey, wtf is Kyle these days anyway), John from BC, Dave from Alger, etc.... for their Holley set-up. If I ask gotago Mark, he'll refer me to SMI for a Q-Jet!:cool:

PLEASE INCLUDE YOUR CARB MODEL AND SIZE....I want to compare Apples to Apples.....looking at trends....

Mine is set up as follows.

68 jets/98 jets
45squirter/28squirter
30cc/50cc
PV blocked/8.5hg
The rear butterflies are ziptied open/Fronts have a 1" hole drilled in the left butterfly.

oh you were serious?:D

80/86 jets
35/35 squirter
50cc/30cc
pink or brown cams cant remember
3.5hg pv/rear blocked

for your 454 I would run

76/82
30/30 squirters
30cc pumps
pink or brown cams
maybe a 6or 7.5 hg pv/rear blocked.

On my little 355 my 4779 750DP is 72/84, 4.5/blocked, 31/32 squirters, 30cc pumps, I think orange cams but I'd have to check to be sure.

Remember, I'm not dialed in completely, but my AF was stable on the dyno.

Good luck George!

I've got a 280 cam in the 396, I tried a 6.5 pv and it made me run pig rich at idle, I went to a 5.5 and I had a flutter at about 2400 rpm, and then I put the 4.5 that quick fuel sent with my carb and it has no flutter and doesn't run rich at idle. When I go to the track I'll play around with pv and jets, but I don't think I'll run the 396 cause of excess crankcase pressure

Mine is set up as follows.

68 jets/98 jets
45squirter/28squirter
30cc/50cc
PV blocked/8.5hg
The rear butterflies are ziptied open/Fronts have a 1" hole drilled in the left butterfly.

oh you were serious?:D

I was about ready to choke you!:D
That combo did have a Kitsap twang to it.....
Appreciate the other info in your next post. You have some fancy carb body, right?

Greg, thaks for your info

Edit:

Paul,
A 280 cam in a 396 isn't all that radical.....I'd figure a bit more idle vacuum and a higher numbered PV. If it works than it must be right.....

^ I know thats what thought but I only pull about 10-11" of vacuum...

I was about ready to choke you!:D
That combo did have a Kitsap twang to it.....
Appreciate the other info in your next post. You have some fancy carb body, right?

Greg, thaks for your info

Edit:

Paul,
A 280 cam in a 396 isn't all that radical.....I'd figure a bit more idle vacuum and a higher numbered PV. If it works than it must be right.....

Just set the carb like it came from the factory. I would bet that it runs just fine for yah.

Just seal her up so she doesnt leak. And kinda like that turkey oven informercial says "set it and forget it":D

The carb has the blue gaskets....no mineral deposits/corrosion.
I'm thinking it'll be make a few adjustments and run her.
Waiting for more jetting/set-up responses...and more advice on squirters...
thinking 74/84 jets, PVs 6.5/blocked, squirters around 30, and 30/30cc pumps is a close setting. Not sure about the cams. Doc is up on the site...has not dropped in....
I know BRETT had to jet up from stock, and I am pretty sure Kevin did too....

George my 800 on my 427 is jetted 76-80 with 35-37 squiter. I also have a A/F meter and its just about perfect with that jetting. Also the font PV is 6.5 and it did not come with a rear PV...

On the 396 it was 75-78 with everthing else the same with great A/F....

but they run non stock motors........................:D or is this for the vette?

I would just run it as is, and see how it does. Then change from there. Just put it on and beat on it!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!

OK, waiting for Kevin, Doc, Greg, other Greg, Brett, BrYan, BrIan, Mike the 66SS Fan, loader1 Mike, Frank, Elky Ben, S-W Ben, Yanni, '69Brian, Sick 66, Craig, Kyle (hey, wtf is Kyle these days anyway), John from BC, Dave from Alger, etc.... for their Holley set-up. If I ask gotago Mark, he'll refer me to SMI for a Q-Jet!:cool:

george you know i run an eddy so whatever doc says, just put a x2 after it:thumbsup:

I would just run it as is, and see how it does. Then change from there. Just put it on and beat on it

x2 the only way your gonna know is to put it on and play around with it

It think alot of people over jet thier carbs:yes: Too fat and you loose alot of power.. Just ask Dave:yes:

It think alot of people over jet thier carbs:yes: Too fat and you loose alot of power.. Just ask Dave:yes:

Yeah having a heavy race car just doesnt work....oh you meant carbuerators:D

It think alot of people over jet thier carbs:yes: Too fat and you loose alot of power.. Just ask Dave:yes:


I will second that, better mileage too.:thumbsup:

George, I bought this book, You need a copy too. I bet Your Bud at schuck's, could get it for You cheap.

http://www.amazon.com/Holley-Rebuilding-Modifying-Workbench-Book/dp/093147227X
I should have Mine done this Weekend.

I just posted in Performance for similar ideas on my 800. Always fun to fish in a couple good ponds.

Dave, I cracked it open, and no jets in either front or back. No wonder the kid sold the carb. Probably didn't run too well for him without jets.

I'll take the suggestions from George's post here, and mine in Performance and maybe come up with a decent baseline. Can't see any markings on squirters, or powervalves indicating sizing. Probably best to start fresh and see what we can do.

Excellent score on your carb George. Should really wake up whatever you put it on.

I ran an out of the box 700 double pumper on our L72 Chevelle with the 4 speed and 4.10 gears. There might have been some gains to be had but it ran so well that I just left it alone.

Well George, since you asked:
http://www.chevelles.com/showroom/data/500/carb7.jpg

I'm kinda interested in this as well. When Kevin's carb gets here, I'll throw a rebuild kit in it and head to the track to see if I can break a Crane Gold rocker.:D

george you know i run an eddy so whatever doc says, just put a x2 after it:thumbsup:

Chicken!!!!:cool: Take a stand as you will be doing this over the winter!!!
You have an Eddy on the truck,,,,I see you are looking for a DP....

but they run non stock motors........................:D or is this for the vette?

I would just run it as is, and see how it does. Then change from there. Just put it on and beat on it!!!!!!!!!!

I'll remind you that even the POS 350 is not stock. Alas, this carb is a mite big for this particular 350....
I believe I have mentioned 2x that this 800DP will go on RatVette. The engine is very much like DOC's Chevelle 427 except the cam is down a few pegs to go with my conservative gearing. Our earliest messages might as well have been titled "427 Admiration Society." Seems much similar parts and technology. Darryl's car is stupid fast and if I had someone's Visa, I could go to Vegas and back, missing not a single gas station! Now Kevin is a member of the 427AS!!!! :thumbsup: (you'll get the info on the secret handshakes etc later Kevin)
The 800DP may likely appear on race day when the Elky gets the 454. I wouldn't want my friends to see me with an Eddy 800 at the track.....:sad:

Just trying to come in with a decent initial set-up as someone has been in there tuning for their combo. Likely a road test with the new carb tomorrow. I wanna experience what I have been missing. I will warm the Vette and do a test with the 800 Eddy then switch to the Holley.

Fire extinguisher in the front seat henceforth ANY time the carb gets worked-on...:yes:

George my 800 on my 427 is jetted 76-80 with 35-37 squiter. I also have a A/F meter and its just about perfect with that jetting. Also the font PV is 6.5 and it did not come with a rear PV...

On the 396 it was 75-78 with everthing else the same with great A/F....

Thanks Kevin:D

Any reason not to run the factory jetting?

Any reason not to run the factory jetting?

For max performance and tuning. Every motor will want something a little different so to say just throw a 800DP on it is not very efficient. You need to fine tune it to what your motor wants. Also what is stock jetting in an after market performance carb?? Doesnt sound right

Any reason not to run the factory jetting?

For max performance and tuning. Every motor will want something a little different so to say just throw a 800DP on it is not very efficient. You need to fine tune it to what your motor wants. Also what is stock jetting in an after market performance carb?? Doesnt sound right

Kevin is right. The first thing to do is use a baseline from what someone else tuned for great performance on a similiar powerplant. Each motor and each carb will have it's own variables that will determine what runs best.

Factory jetting may run fine and reasonable performance on amild set-up but if you want more than just a middle-of-the-road powerplant, you need to play a little with different aspects of the carb, from squirters to jetting.

Chicken!!!!:cool: Take a stand as you will be doing this over the winter!!!
You have an Eddy on the truck,,,,I see you are looking for a DP....



yeah i lookin for a DP just saw you were looking for my input on your jets and such and all i know is what size metering rod and jet combo are in my primarys with what colour step up spring..... ITS LIKE SPEAKING LATIN... USELESS! when i get a holley ill be looking for you insight, until then if you need some metering rods for your primaries, gimme a call

Vince,

I'm not running stock jetting/calibration as I'd have to go spend money to buy stuff for it.
I have some spare stuff and assorted jets from old dead Holleys and freshly dead 3310.
I just took out the frt 4.5 PV and put a 6.5 in as my 427 has 13" vacuum. The carb stock is a 6.5. Leaving the jetting 76/84 and the squirters 31/37, no spare acc pump cams so going with the BRN front and Red rear. OK, saw OUTCAST's thread on PERF that the 800DPs CAME WITH 50cc rear acc pumps.
Preparing for a roadtest in the morning......

Dreis454 and Mortec say
4780 800 (F)72,(R)76 6.5,8.5 4150
4780-1 800 (F)70,(R)76 6.5,8.5 4150
4780-2 800 (F)70,(R)85 6.5 blocked 4150
4780-3 800 (F)71,(R)85 6.5 blocked 4150
4780-4 800 (F)71,(R)85 6.5 blocked 4150
71 PRIMARIES stock calibration sound very lean.....
If it is FAT with 76, will bump down to 72s.

I am expecting nothing less that night and day difference in the car so I can eat crow and tell Doc FRYNTYR "I was wrong for years, 3310s suck"
I will tell you, seat of the pants, my 800 Eddy is pretty close to perfect so the 800DP has its work cut out for it.....
Gotta do something measurable......hate to say X feels better than Y...I like saying how much better......

PrimerNovaBen

Latin is dead, as dead as it can be. Once it killed the Romans, now it is killing me.
Read Caesar's Gallic Campaigns sometime. "All Gaul is divided into three parts...."
Seriously, Get your nose in some Holley carb books and some of these threads.....good stuff.

why does everyone put such big squirters in ?????
after doing MANY tests when I raced, I & many buddies found that a 28 shooter with the long nozzles made the best 60ft times in cars with small blocks & BB.

a 37???? c'mon! you may as well dump a glass full of fuel down the carb!
leaner rather than richer will move a tank like a Chevelle off the line, THEN you can add fuel as its moving (main jets)

try a set,you may be surprized.

My 800 DP has 71/85's from factory. You cant really say 71's are lean as there is probably something else in the metering compensating (larges PCVR's etc). Mine runs real nice and real clean. I would like to move jetting around a bit at some point, but the factory jetting I would think would be a great place to start as its going to be more in the ballpark.

Ya know....I was looking more at the factory calibrations

4780 800 (F)72,(R)76 6.5,8.5 4150
4780-1 800 (F)70,(R)76 6.5,8.5 4150
4780-2 800 (F)70,(R)85 6.5 blocked 4150
4780-3 800 (F)71,(R)85 6.5 blocked 4150
4780-4 800 (F)71,(R)85 6.5 blocked 4150

Thinking before I mount that 800DP I will re-jet to 72, closest I have to stock....
Waiting for the frikking Sears repair man......grounded til he shows.....


Dangerous DAN
I believe stock on this was 31/31 squirters.
Testing will be on the RatVette...3400# with a few gal of gas in it.....
Kevin's settings for his 427 /800DP "76-80 with 35-37 squiter. I also have a A/F meter and its just about perfect with that jetting. Also the front PV is 6.5 and it did not come with a rear PV..."

Hmmmmmm, that is way far from stock....

why does everyone put such big squirters in ?????
after doing MANY tests when I raced, I & many buddies found that a 28 shooter with the long nozzles made the best 60ft times in cars with small blocks & BB.

a 37???? c'mon! you may as well dump a glass full of fuel down the carb!
leaner rather than richer will move a tank like a Chevelle off the line, THEN you can add fuel as its moving (main jets)

try a set,you may be surprized.

Dan, I am always up for trying something new on the racecar. But going to a smaller shooter wont lean it out it will just ceate a higher pressure fuel stream for a longer amount of time. Which in theory as long as it is enough fuel so it doesnt bog it would get the car off the line faster if the car needed that amount of fuel going into the upper rpms.

I have had a lean bog before on my 461, even putting shooters into the 40 range on it. Along with a 50cc. This would happen everytime off idle. No matter how hard I tried to accel. It didnt get fixed on that motor until I took two plugs out of the rear of the main body that richened up the idle by 25%. And WHAMO! no bog.

I understand how the shooters work & the length of time they shoot. I just didn't want to go into all that,but I'm glad you are aware of it.:thumbsup:
what I can't seem to understand is why you had a LEAN bog even with larger shooters.:confused:

how loose is/was the convertor?

I understand how the shooters work & the length of time they shoot. I just didn't want to go into all that,but I'm glad you are aware of it.:thumbsup:
what I can't seem to understand is why you had a LEAN bog even with larger shooters.:confused:

how loose is/was the convertor?

This was with my stock converter and with my 8" ATI. I thought the converter might fix it but it didnt. The motor sound like it shut off for a good second or two if I went WOT. I am going to try to put the plugs back in and retune the carb next time it is apart.

George I'm home......:D Any way my 950 hp from Pro Systems is set up 76/86, 50cc/30cc sqrtr 40/40 pv 6.5 none rear, and it has adj air bleeds just for your info...I've been checking out this forum now, attitudes are cool. Do I live far enough west to check in? Aloha Mike

...Do I live far enough west to check in? Aloha Mike

Heck Mike, they let a foreigner like me in, I'm pretty sure they'd welcome anybody with a Hawaiin address. :thumbsup:

For that matter Dangerous Dan from Connecticut is a regular here also. He's west...of Europe that is. ;)

Hey John you should bring your car here we could use some of that smoke to get rid of the mosquitoes:thumbsup:

I've heard mosquitoes like nitrous.:yes::D

I've heard mosquitoes like nitrous.:yes::D

I was hoping someone would jump on that before me. :D

Mike,

There is a great bunch up here in the NW. Welcome aboard!
Love that Chevelle of yours....
re-state your last outings...I say richer secondaries...

George I'm home......:D Any way my 950 hp from Pro Systems is set up 76/86, 50cc/30cc sqrtr 40/40 pv 6.5 none rear, and it has adj air bleeds just for your info...I've been checking out this forum now, attitudes are cool. Do I live far enough west to check in? Aloha Mike

Welcome, you have now entered the biggest soap opera this side of spokane raceway:D

Thank you and thank you. I posted in the performance forum about my Dick Miller weld in anti roll bar looking hard to fit. Brian posted up about HRparts anti roll bar thanks guys:thumbsup:

Welcome, you have now entered the biggest soap opera this side of spokane raceway:D

You haven't been to Kauai raceway:boxing:

RatVette was not happy leaving the driveway....on its way out, the 3310 fouled plugs.
This reappeared tonight. They did clear in a few minutes of driving...... The Eddy 800 seems to still be dialed-in good. In 4th gear, 1000 rpm, able to pull up a grade with out surge or studder...... I was having such a blast, have not driven the car in 3-4 weeks...I stayed out til after dark!!!!!! OK, about an hour all told.....longer than it takes to get to Bremerton so I know i have this part covered now.

OK, I know what the Eddy can do, now to swap on the 800dp and be ready for the next sunny day

OK boys...

THE HOLLEY 800DP is mounted and the RatVette has had a roadtest.

I did not rebuild the carb due to the 'minty' look inside and out.
Once the gas got to the carb, she fired.
I was cursing the dual feed set from BrIan refused to seal. I figured no test run tonight. :sad: Finally stopped the leak but I may never get that line off!!!!!:yes::cool:

She idled down but would stick a bit at 1400 rpm so need some different return springs of more return spring pressure.:thumbsup: I did not even set the idle mixture!!!! Up the drive and off I went!:beers:

I noticed right off the bat, a little blip of the throttle and she took off.....so she likes a lot of squirt 31s. No real place to romp on it.....but I can tell you, through top of second gear....no issues and when the secondaries open, things start happening quickly. A lotta energy has been tapped. :disco:
I can state with confidence that this is the best the RatVette has ever run.

Months ago Berg had a little drive in the car...said something appeared to be missing. Well, I think I have found it.:eek::eek:
So please consider this my formal apology Doc for ever saying 3310s rule and DPs suck.

Without A-F readings, I think I am pretty close.....
No low speed surge pulls from 1300 on up in 4th gear
No middle cruising surge
No acceleration issues so far, rattles, pops, surges, etc.

With the Vette's partially reclined seating, you are more or less wearing a 68 Vette if six foot/ 230# , difficult to gauge the pull....
Possibly some refinement in the idle mix, a few odds and ends but....
For $100, the carb works like a champ, and I am one very happy Craigslist buyer!:hurray:

72/84 jets, 31/37 squirters, 30cc/50cc, brn/red acc pump cams


:waving:

Good news, George.

Glad to hear you're having some mechanized fun.

Between You, Dave, and Me, this has been a successful 800 Double Pumper Sunday.

Cool, George.

Are You saying You got the brown cam on the 50cc pump?

I think I gotta try the bigger squirter on the rear. I don't have a 35, but I got acouple 37's.

One interesting point in My Holley book, is that a Bog may be from too much of a shot. You may need to go to a smaller squirter, to prolong the shot.

I think I need to go bigger on the squirter, and if that don't do it, I have to try to take alittle out of it.

So that means the vette is gona come out to the track now? I dont think you can squeak out of this now that you have more power.:yes:

Dave,
Front is 30cc pump, brown acc pump cam, 31 squirter, 72 jet
Rear is 50cc pump, red cam, 37 squirter, 84 jet

Should the 3310 ever life again, it will certainly get a different/larger squirter.

BrIan,
Geez man! Two nights of fiddling with RatVette and you are throwing the ol' guilt trip at me! Track outing? Tempting, tempting..... It would cause the FOUR HORSEMEN of the APOCALYPSE to appear.....not to mention Tsunamis, famine, and pest infestations.

Remember George you are under our influence. So repeat after me, I will race the Ratvette, I will race the Ratvette :yes:.

(the other) Greg

Are You sure of the colors? They say that Brown, and Yellow are the 50cc cams. And the other colors are for the 30 cc pump. You can use a 30cc cam on a 50 cc pump, but no 50 cc cam on a 30cc pump.

I'm just trying to get all the facts straight.

Here's a link to the chart I'm using so far.

http://www.chevelles.com/forums/showthread.php?t=221476

It would cause the FOUR HORSEMEN of the APOCALYPSE to appear.....not to mention Tsunamis, famine, and pest infestations.

Well I would hope the vette could be a horse down the 1/4mile:D

Dave,

I appreciate your comments.
I went out there, took a picture....
The front cam does look RED in the pic.
Let me get back to you in the AM...I'll have my droplight, natural sunlight....

No bog yet so I may have actually gotten something that works for a change.....
I've had every problem possible so understand my loathing to make changes!
oh, I did swap the frt 4.5 pv out, in with the 6.5 PV and the rear PV is blocked

Well I would hope the vette could be a horse down the 1/4mile:D

Well BrIan, since you stepped your game up several pegs, you have been no fun to talk smack to....

Please let Me know, I got a serious bog to work out. Trying to get this cam thing figured out.

A bog can be to lean on the jetting too. When I put a single plane on the chevelle for a while, it had a bog with no other changes but going dual plane to single, I jetted up the primary 2-3 sizes and it went away. I was already running a large squirter si I left that alone. When I went back to a dual plane I had to jet back down. Just need to play with it and see what the carb/engine likes.

Dave,

OK, I put my head on the right way this morning
FRT / Rear
72 / 84 jets
6.5 / blocked PV
31 / 37 squirter
30cc / 50cc acc pumps
RED / BROWN cams

This AM I checked float levels by looking at the gas sight plugs
I set the idle mix, about a turn in from what they were
Still a mite stinky...may lower the front float a tad and experiment more with the mixture...

She still wants to idle high once drining even after some new dual return spring action today. Will mess with the throttle cable. Has some slack, maybe not enough.

Passenger Christine says the Vette is really running great!
Has even better low rpm manners......4th gear 1200 rpm slow cruise

Pull the sight plug out and make sure the level isn't trickling out. Need to bump the car for a trickle and it will be right. Any higher and you can get a rich idle. Try it and see if it cleans up. Also make sure your secondaries are closing all the way. I've had mine not close all the way after mashing it. May need a little adjustment for the secondary rod to ensure it pulls it all the way closed.

Please let Me know, I got a serious bog to work out. Trying to get this cam thing figured out.

May need to get together for some carb tuning. I'd be up for it if you want.

Pull the sight plug out and make sure the level isn't trickling out. Need to bump the car for a trickle and it will be right. Any higher and you can get a rich idle. Try it and see if it cleans up. Also make sure your secondaries are closing all the way. I've had mine not close all the way after mashing it. May need a little adjustment for the secondary rod to ensure it pulls it all the way closed.

Good tips, much appreciated.
I see fuel in the frt, planned to lower it a mite....
Rear I gotta bump....to see

Will check the SEC for hanging open.

Gotta get back on the remodel stuff, putty drying, lunch cooking....
Got a 454 shortblock to build...

It sounds like we need another TCNW get together to do some tuning on our cars:thumbsup:

Anybody wanna come down to Lakewood?
I promise I'll NOT hand you a hammer or paintbrush!

It sounds like we need another TCNW get together to do some tuning on our cars:thumbsup:

why not just have another BBQ?:hurray:

OK gents, here is the beastly 800DP mounted...

http://memimage.cardomain.com/member_images/3/web/3027000-3027999/3027956_49_full.jpg

Looks good George... it's a bit tighter under the hood of the vette than in the Chevelles.:yes:

Seriously tight and a PITA to work on....especially as you cannot jack it up under the diff.
Forget about crawling under it.....
Gotta jack one side, then the other, then go back and forth...
A lift would be a blessing......
Mondo large steering wheel..., no tilt.....only telescoping in 68
Room for a few gymbags for outings.....pack light.....
And absolutely no MPG achieved during testing. $30 in gas spent since SAT night. Had a blast!

Positive note, I saw UL Reg here for 3.97 today....naturally I got Premium for $4.25.

why not just have another BBQ?:hurray:

We're about due for another one aren't we? Hoss's was back at the beginning of June wasn't it?

Who's gonna volunteer?! :thumbsup:

May need to get together for some carb tuning. I'd be up for it if you want.

It sounds like we need another TCNW get together to do some tuning on our cars:thumbsup:

Anybody wanna come down to Lakewood?
I promise I'll NOT hand you a hammer or paintbrush!

why not just have another BBQ?:hurray:

We're about due for another one aren't we? Hoss's was back at the beginning of June wasn't it?

Who's gonna volunteer?! :thumbsup:

If We do have a Ho Down at Doc's, I could finish the trim on the Shed.:yes:

hopefully not with the shopvac.:D

No ShopVac.:noway:

So, just to keep Myself inline, I made a Bonehead move. I just went out to up the rear squirter, and jet up the Primary. Just as I drained the fuel bowl, I realized I didn't hook up the rear Acc pump arm, when I re-jetted the secondaries Yesterday.:clonk:

So I put the bolt back in,hooked up the rear pump arm and went for a spin.

Houston, We have lift-off.:D:yes: It really has the kick now.:thumbsup:


Here's where I'm at:


Primary/ secondary

70........81
.31.......31
6.5.......blocked
30cc.....50cc
orange-brown

So, just to keep Myself inline, I made a Bonehead move.

Noooooooo, not you!!:)

OK gents, here is the beastly 800DP mounted...

cool..you have the old school linkage too..you can "feel" the secondaries in the pedal...I have an original 4779 thats like that..its not even a 4779-1..its just a 4779 :D

If We do have a Ho Down at Doc's, I could finish the trim on the Shed.:yes:

We're up for a TCNW BBQ!! When should we do it??????

Weekend before the August 22nd race's?

Ill be racing a open wheel modified at State Line in Idaho that weekend.

No ShopVac.:noway:

So, just to keep Myself inline, I made a Bonehead move. I just went out to up the rear squirter, and jet up the Primary. Just as I drained the fuel bowl, I realized I didn't hook up the rear Acc pump arm, when I re-jetted the secondaries Yesterday.:clonk:

So I put the bolt back in,hooked up the rear pump arm and went for a spin.

Houston, We have lift-off.:D:yes: It really has the kick now.:thumbsup:


Here's where I'm at:


Primary/ secondary

70........81
.31.......31
6.5.......blocked
30cc.....50cc
orange-brown


Nice :sad: ,,,,,, Glad it's better though. I would think you'd want a few jet sizes bigger in the front, 70's are pretty lean for your set up but I think you said it was running a bit fat, right. Mine would have a slight stumble with that lean on the primaries.

I would go next size up on the squirter on the secondary, it should hit harder yet.

I'm gonna pick up a .34 squirter tomorrow. All I got are .37's, then I'll pick up the front jets a notch or two.

We're up for a TCNW BBQ!! When should we do it??????

Ya might wanna start a thread on this.
I will be in MEX 18-25 AUG for a wedding....and more than a few Coronas:beers:

Is jetting and squirter sizing different for auto and std trans setups, assuming same carb and engine otherwise ?

Seat of the pants dyno baby,,,, I usually end up the same on manual or auto. At least when you're running a decent stall. Flash stalling a converter you want it to hit hard, well at least i do.

Is jetting and squirter sizing different for auto and std trans setups, assuming same carb and engine otherwise ?

It's all about the Motor running it's best. Regardless of what's behind it.

it's All About The Motor Running It's Best. Regardless Of What's Behind It.


X2

Thanks. Makes sense. :)

Dave, glad to hear it was something simple!:hurray:

With my 31/37 squirters, I may get a few others and try them out......
While it realy goes when the secondaries kick in....I do have the hunch there is a Rat or Two drowning in the secondaries.....maybe I'll find another 31
Going to a 31 rear squirter and the 50cc pump, thinner shot that last longer.....
Hmmmm, let me see what I can find on my 'parts' carbs for squirters.....

No fear loader1, this is merely a cruiser.....

Word is, a .35 on the secondary is the ticket.:thumbsup:

Time to bring this back to the top.

Dave, what rear squirter did you run on the 22nd AUG and any comments on your carb set-up? ie stuff you learned or changes you want to make?
I still have the rear squirter at 37, wanna know what worked.
I did grab some 28s. Removed the 25 from the POS 600 Holley on the Elky and stuck a 28 in there...helped:thumbsup:

At daughter's wedding, I had the Vette out. Since I got the 800DP (used) I've never gotten it to stay idled down. Figured with the larger jets and smaller numeric PV that the carb was from a thumper engine....the sec blade could have been opened to help get the primary blade right on the idle transfer slot.
Soooooo, removed the 800DP from the Vette, only a little fuel ended up all over the place.... After draining the carb, flipped her over and took a full turn outa the sec closed position screw. Was shining a lite under the carb, still some light visible, far less than when I started. Reset the primary blade position on the idle transfer slot. Hooked the carb back up and whatcha know....she fired-up and once warm she idled at 800 with 1/2 screw turn more on the idle speed screw. Around 10pn for this so shut her down, test ride another day soon.

Time to re-look this....
I have it on the Elky...big bog from a stop or low rpm when I mash it.....
wuuuuuuuuuuu. WAAAAAAAAAAAAAAAA and the tires explode....
When I left off, think I was still at 31/37 squirters...30cc frt/50cc rear acc pumps
Will go out with a MATCH lit:noway: to see

Probably need bigger squirters esp in the front and pos. larger pump vol. my 950 hp has a 50cc front pump

OK, that's TWO for bigger squirters...You guys are suggesting when the throttles slam open, that I need more gas...guess 427 set-up is not working for the 454....

OK, I have 30cc frt, 50cc rear acc pump...800DP
Give me some squirter sizes to go by....
remember, this is street with some race.....

I'd swap the rear 50 cc out for a 30 cc..just for schits and giggles

So Chris, you are saying too much in the secondaries is causing the bog
What I had thought originally
Doc is saying NOT ENOUGH
I think KEVIN went to super mondo size squirters....
What were your settings last Mech Sec carb you used Chris?

All I can say so far is that after the bog, there is nothing but tire smoke....
Wish I had a rear-facing/downward-looking camera

My spec sheet is at home but I have 50cc front and 30 cc rear. You are more than likely experiencing a lean bog. When you hit the throttle the eng is seeing mostly air not enough fuel until the boosters and main circut start flowing.

Maybe you dont have enough power.. l:)

But sounds like you need more gas! Weird thing is I'm running 31 squirters all around, size 82 secondary jets I think and 6.5 power valves. I have no bog, just raw power! :hurray: Perhaps your getting a rich spurt, then it cleans up and hauls. I guess you could try going down, then try going up, see what works. If I'm getting away with the smaller squirters though, I would think you should be able to as well. What jets you running and how do your plugs look?

I was running 75/82 jets with a 35/37 squirt with 6.5 PV in front none in the rear...

This was on a stick car so I think it may be different with an auto. First thing is make sure jetting is correct then play with squirters to see what it wants. Maybe even try the same squirters with different cams to lengthen or shorten the shot..

Hmmm, good point on the stick car difference. :thumbsup: I guess thats why you get paid the big bucks! I suppose that could cause some difference.

Well, well, the reference to std shift...it came off my std shift Vette and oh, it is 400-500# lighter then most of what we drive here.....as well as the cubes and compression.....
May take a few tries to sort this out....gotta see what squirters have in my box of goodies.
What was a little burble in the Vette when the secs opened is now a major problem

What was a little burble in the Vette when the secs opened is now a major problem

Yeah too much carb, too little motor:p

I'll bet my SMI Qjet would make it scream.

Yeah too much carb, too little motor:p

I'll bet my SMI Qjet would make it scream.

That SMI carb was good for 14 second passes and cost more than the cash I paid for block service and gaskets.:p No thanks pal..... I think my Eddy 800 would crap all over your SMI Q-Jet. But....I'll get the 800 Holley dialed-in too.

That SMI carb was good for 14 second passes

Still better than your fastest so far...................:D

And I was running that carb deep in the 13s DUDE. I spit at your eddy.

Still better than your fastest so far...................:D

And I was running that carb deep in the 13s DUDE. I spit at your eddy.

Wow! What a boast! Gee, beating up on a tired 350 with your 396 and TKO.
Some accomplishment....besides, it wasn't THAT much faster....:D

I got somethin fer ya:eek:

So Chris, you are saying too much in the secondaries is causing the bog
What I had thought originally
Doc is saying NOT ENOUGH
I think KEVIN went to super mondo size squirters....
What were your settings last Mech Sec carb you used Chris?

All I can say so far is that after the bog, there is nothing but tire smoke....
Wish I had a rear-facing/downward-looking camera

George,I have an original 4779 (no dash after the list number) and it has downleg boosters and 73/83 jetting...gets me to 107-108 MPH no problem with those 3.31 gears..I believe it has 31 squirters..have to get back to you on that...and it seems that the 50cc pump works best in the primary unless you have one of those 800 CFM Holley spreadbore double pumpers (then the 50 cc is in the rear)
You can try upping the squirter as Doc suggested..maybe one of those high flow squirters would work best..

George,I have an original 4779 (no dash after the list number) and it has downleg boosters and 73/83 jetting...gets me to 107-108 MPH no problem with those 3.31 gears..I believe it has 31 squirters..have to get back to you on that...and it seems that the 50cc pump works best in the primary unless you have one of those 800 CFM Holley spreadbore double pumpers (then the 50 cc is in the rear)
You can try upping the squirter as Doc suggested..maybe one of those high flow squirters would work best..

A sudden hit can also be a primary lean condition. You could try a jet or two up on the primary side and also go up on the squirter. The CC pump is just available fuel. I really don't feel it supplies any additional fuel for the same throw of the pump arm.

so,
up 1-2 jet sizes on the primary
up the next squirter size on the primary as well.

Report back with test results.

Seems I won't be getting the Elky up the driveway for at least two days....brrrrrrrrr
Until interupted last evening, I was preparing to pull the quirters.....31 rear...hmmm, what was I thinking....that means 31 front, maybe I even put a 28 in there....
Will look, probably go close to 35/37 as I can with what I have.....

School CXL'c here, now gotta take Her Worship to work

I thought you said before you had the larger squirters in there, did you take them out.
31-31's are not even close to enough for a good brutal hit. Kevin can attest, a good squirter combo tuned in makes all the difference in the world when mashing the throttle.

Try the 35-37 and see how it responds, they are easy to change and you can always go back down. I'd leave the 37 in the secondary, try the 35 in the primary, then try the next side down on the primary to compare. I do think it will come unglued with the 35-37 combo.

I thought you said before you had the larger squirters in there, did you take them out.
31-31's are not even close to enough for a good brutal hit. Kevin can attest, a good squirter combo tuned in makes all the difference in the world when mashing the throttle.

Try the 35-37 and see how it responds, they are easy to change and you can always go back down. I'd leave the 37 in the secondary, try the 35 in the primary, then try the next side down on the primary to compare. I do think it will come unglued with the 35-37 combo.

I'm gonna have to try this too.
The 31s in mine seem to bog just slightly but I attributed it to the 2.20 first in the M22 with the 12 bolts 3.31s & 28" tires.............

I have several diffent sqirters from my racing days.
gonna try 35s F & R.

I'm gonna have to try this too.
The 31s in mine seem to bog just slightly but I attributed it to the 2.20 first in the M22 with the 12 bolts 3.31s & 28" tires.............

I have several diffent sqirters from my racing days.
gonna try 35s F & R.

I'm running 35 and 37's in my 800 on my chevelle and many here know how hard it hits. :yes: Can't hurt to try it. Good luck with it Dan.

Speaking of that chevelle, anytime to get into it yet?

Ok, revise,,,,,,,,,,,,,,,,,,,,, it used to hit hard!!!!!!!!!!!!

Nope, haven't dug into it yet and don't see having time to do it for a while. I may drop an extra motor I have laying around in it. :D

George, my 830 is set up pumps 50/30 squirters 40/40 jets 76/86. So they can get real rich and run well.
Gone fishing again back by Friday.

My new pro systems 950 is set up with 30/50 accel pumps..

35/35 squirters here. Hits so hard it does a burnout on the freeway when Im trying to pass someone:D

George, my 830 is set up pumps 50/30 squirters 40/40 jets 76/86. So they can get real rich and run well.
Gone fishing again back by Friday.

Wow,,,,40/40's, that's awesome!!!!!!!!!!!!!!!!

Just looked at the spec sheet for the Prosystems 950 it says 50/30 accel pumps but it dosent say front or rear, the jets are 76/86 squirters are 40/40 with 6.5PV in front none in rear...

George, my 830 is set up pumps 50/30 squirters 40/40 jets 76/86. So they can get real rich and run well.
Gone fishing again back by Friday.

Just looked at the spec sheet for the Prosystems 950 it says 50/30 accel pumps but it dosent say front or rear, the jets are 76/86 squirters are 40/40 with 6.5PV in front none in rear...

Kevin and Mike, when I was running the air gap I had 40s in there. But I noticed that off the line it would puff a little black out. Went with Bobs suggestion and the 35/35s kick butt:yes:

Just a thought.

Kevin and Mike, when I was running the air gap I had 40s in there. But I noticed that off the line it would puff a little black out. Went with Bobs suggestion and the 35/35s kick butt:yes:

Just a thought.

Thanks for the info Brian. I have a set of 35s :thumbsup:

I bought a pair of 35s this evening. Even with employee discount, $20/pair!!!
I think I'll try 35/35 as BrIan's former 454 is most like mine and his car is an auto like mine.... Then will try 35/37, then will try 37/35
edit 9:16pm
now 35/35 for squirters......old set was 31/31, stock was 31/37
my notes here said the primary jets are 72.....really thought I had put 74s in....
So, fer sure 31 squirt on lean 72 jets is not good....
Furnace is in the garage and obviously in use....not gonna be pulling carbs down tonight.....brrrrrr