I know this is a tired subject, but I have read so many different things about so many carbs that I don't know what to think...any suggestions or opinions would be great. The car will be mainly a weekend cruiser/briuser with the occasional trip down the quarter mile.
Thanks in advance
Nick

Here's the setup:
454 .030 over
781's pocket port, 3 angle valve job
.133 dome KB pistons (about 9.5-10:1 I think)
Isky .510/510 cam
RPM Air Gap
TH400, 2800-3000 stall, 3.08(?) gears

IMO 750 vac sec. holley would be perfect! Have fun!

i have one for sale if you want i'll send pictures and a price to your email

Pics and a price would be great, email is in my profile.
thanks,
Nick

with the gears you have i agree with the 750 vac sec recommendation.

no luck uploading the pics, i'll put them on my website and send you the link, and information on the carb.

you've got mail

I like a 750 DP myself.

..another vote for the 750 vacuum secondary carb..works great w/my combo

If you want the best bolt-on, trouble free carb there is, you can't go wrong with an Edelbrock 750, they are also very easy to tweak to your engine combination, I've had 3 of them on 3 different cars and they all ran great!

Originally posted by Rapid Robert:
I like a 750 DP myself. i like em too, but with 3.08 gears i don't know if it would work as well as a vacuum seconadary would. if he had some 3.73's i would vote for the dp. graemlins/thumbsup.gif

Okay, this will probably open an ugly can of worms, but what is the difference performance wise between the Holley and the Edelbrock? or is there any?

depends on how well you tune ethier of them. I personally like Holley's for ease of adjustability, and the fact that i know them.

Edelbrock will get better mileage,Holley better performance, IMHO :D

I agree with Robert, you probably could squeeze a few extra ponies out of the same CFM Holley, but is it really worth it? All just depends on how much time you want to spend adjusting your carb, like I said before, for right out of the box, bolt-on performance, you can't beat an Edelbrock, period.

Just to be different. With 3.08s use a Q-jet. Nothing else will work as well with the normal RPM range you will be turning.

Here's another option. I purchased a carb from George at Dillman Race Carbs and Induction, or DRC&I. It's a custom built 830 Holley double pumper. He machined the choke off, restyled the booster venturi, blended the booster ports and blended the main wells. The main body and bowls are finished in gold and the metering blocks and base plate are brushed. He took by old 750 in as a trade in and charged me $275.

My car runs great now. It starts right off and idles at 1000 rpm in gear which is great considering the total combination.

Maybe he could suggest something appropriate for your car. I am having him restore the original carb from dads 67 L79.

Phone for DRC&I is 570-573-0087. He is in PA.

I can also get some digital pics of my carb on my Nova if anyone is interested. Shoot me an email if you want them. leisold@tconl.com

Originally posted by texastornado:
you probably could squeeze a few extra ponies out of the same CFM Holley, but is it really worth it? All just depends on how much time you want to spend adjusting your carb, like I said before, for right out of the box, bolt-on performance, you can't beat an Edelbrock, period. ...I took my 750 vacuum Holley out of the box,changed the secondary spring to the 2nd yellow,and adjusted the floats.ET in signature :D
Doesn't get any easier than that!

Originally posted by mr 4 speed:
</font><blockquote>quote:</font><hr />Originally posted by texastornado:
you probably could squeeze a few extra ponies out of the same CFM Holley, but is it really worth it? All just depends on how much time you want to spend adjusting your carb, like I said before, for right out of the box, bolt-on performance, you can't beat an Edelbrock, period. ...I took my 750 vacuum Holley out of the box,changed the secondary spring to the 2nd yellow,and adjusted the floats.ET in signature :D
Doesn't get any easier than that! </font>[/QUOTE]Sure it does. I took (3) Edelbrocks, two were 750's, and the other a 600, bolted them onto the three different motors (396, 454, 350), and tightened down 4 bolts, connected the fuel line, the linkage and vacuum ports, and I was done. Each one ran great! It doesn't get any easier than that! :D

My car started with a 750 Edelbrock,then a 750DP,and now a 950HP,,,the Edelbrock wouldnt hold a candle to the performance and I didnt have to touch the HP carb either.

IMO I would recommend a Mighty Demon 750. Super Chevy is using a Demon on their Danger Mouse project motor. You can also call Demon and talk to their tech guys, and tell them what you have and they can tell you exactly what you need. If you have basic carb knowledge it shouldn't be too hard to set it up properly. Plus it's fun to learn how to work on carbs.

..I don't know of any Edelbrock carbed 454's that runs 12's with 2.56's :D

i have a 750 edelbrock on my biscayne, and a 3310 750cfm vacuum secondary holley on my chevelle.

ive swapped carbs between the two and the holley performs better on both cars. when the biscayne is road worthy again i will be replacing the edelbrock with a holley.

If you can stomach the price the 750HP Holley works great. I had this on my 68 Vette with a 30 over 427 and it ran like the proverbial scolded dog!............but kiss mileage ggooooooooodbye! :D

4FTTY4........I would like you to stay with the vacume secondary version also.....because your 3:08 type gear is not enough to support a mechanical secondary type carb.......a 750(3310) type carb with a secondary metering block so you can jet them is a fine choice.....an origional #3310 with the down leg boosters and standard secondary block would be a better find........Thanx allot, Jesse @ BIGS!!

BIGS Performance Carburetors

www.bigsperformance.com (http://www.bigsperformance.com)

Here's a pic of one of BIGS carbs that I purchased this year, and I am very pleased with it. They color matched the carb to my car, and were great to deal with.

http://www.chevelles.com/showroom/Xtreme70SS396/sidecarb.JPG

Very interesting post as I am just currently trying to select a carb myself; but I don't see a Holley 750 vacume sec. in the summit cataloge??? I see the Edelbrock EDL-1411 $281.88 but not a Holley unless its the 4160 which from what I understand doesn't have interchangable jets???

Walrus,

Try this. Same 3310 they have always made. Great carb.
Holley 3310 at Summit (http://store.summitracing.com/partdetail.asp?part=HLY%2D0%2D3310C&N=120+4294925239+4294925135+300737)

Walrus

a 4150 series carb has front and rear metering blocks with replaceable jets. an example is the picture posted above.

a 4160 carb has a front metering block with jets. but the secondaries have a metering PLATE with fixed jet sizes. to change jets in the back of a 4160 carb you have to change the whole metering plate.

double pumpers are always 4150s, and most vacuum secondaries are 4160s. but holley did make a 4150 vacuum secondary carb, the original 3310 and 3310-1. you can upgrade a 4160 to 4150 by purchasing a conversion kit sold by holley, you will also need a new fuel inlet since the carb will be longer with the addition of the metering block.

For mainly a "street cruiser" it's really hard to beat a properly setup Q-Jet. graemlins/thumbsup.gif

OK guys....heres a shot at a possible deal for Team Chevelle members...

Our BIGS 780 Vacume Secondary Holley

*quick change secondary cover for easy spring swap
*jet extensions/notched float on secondarys
*secondary metering block
*down leg boosters
*hand or electric choke
*any color you desire
*chrome dual feed line
*set up by us to your specs

member price $425.....normally $549

let me know if ya need one, Jesse

home e-mail below

bigs1050@charter.net

From the above posts I am leaning towards the Holley but I am still a little hesitant b/c the Edelbrock seems so user friendly. From reading about the Edelbrock it says that you can change jets, rods, adjust floats, replace needles and seats without having to drain fuel or remove the carb. Is all this possible with the Holley and if not how involved is it in general, how about changing the jet size on the primary in particualr???

You can replace the primary rods and power springs in an Edelbrock from the top. After that you need to remove the fuel line, 8 or 9 screws, the air cleaner stud, the accelerator pump rod and 2 choke rods along with the primary rods to access the inside of the carb. You may lose a little fuel changing jets in a Holley, but it's a lot easier.

..once you get jetting correct,theres no reason to keep taking the carb apart,especially on a typical street car.
When I've needed to take the front float bowl off my Holley,a cap from a spray can comes in handy to catch the fuel when it drains out after removing the bolts.

On a combination like this a 750 Vacuum Secondary Carburetor should give you the best overall performance. The stall speed is borderline being able to use a mechanical secondary carburetor, but with the 3:08 rear gears a vacuum secondary carb should work extremely well.