I had posted earlier that I would share the flow numbers on my heads that will be going on my 489. These are 320cc aluminum with a bowl blend and gasket match and blended chambers. I only flowed two cylinders #5 and #7 for a comparison. They were flowed on a Flow Lab 520 with a 4.310 bore fixture(all the way through). This flow bench locates the head with a head gasket just like it would be bolted on the block. I mention that because the flow bench I used to use was a Superflow 400 and it was not this way. You could move the head around on the fixture. It is also computer controlled and calibrated.
#5 Intake:
215.2 @.300
270 @.400
342.3 @.500
374.7 @.600
395.9 @.700
406.5 @.750
#5 Exhaust
157.8 @.300
187.8 @.400
225.2 @.500
255 @ .600
282.7 @.700
291.7 @.750

#7 Intake
223.9 @.300
291.1 @.400
334.8 @.500
358.8 @.600
376 @.700
368.1 @.750
#7 Exhaust
148.6 @.300
179.9 @.400
212.1 @.500
256.1 @.600
277.5 @.700
288.2 @.750

There was a bigger difference between the "good"(#'s 1 & 5) and the "bad"(#'s 3 & 7) intake ports than I thought there would be. I have ported and tested mostly GM castings in the past and I know they vary a good bit but I expected aftermarket heads to be a little closer to equal. I'm sure I could tweak these ports and get them closer but I'm not sure I will. The exhaust ports had quite a bit of turbulance so I radiused the edges of the chambers below the exaust valve and radiused the edge of the valves themselves to try to reduce it. I haven't flowed them again to see if it helped or not. We tried a tulip exhast valve and it helped the turbulence but didn't make much difference on the actual flow numbers. If I decide to flow them again I'll repost the new numbers.

For a comparison here are Pro Toplines "advertised" flow numbers.
Intake:
245.36@.300
308.05@.400
339.84@.500
360.43@.600
374.31@.700

Exhaust
160@.300
195@.400
229@.500
248@.600
265@.700
I wonder if they average all the ports to get these numbers or are they from the "good" ports only?

Wow, very good numbers on a 4.31 bore and conventional head

SWEET! wish I could've been there.... :(

My question is "where did you get the Flowlab 520"? I tried to get one about seven years ago and never did get what i'd paid for. John Wayne would slap stupid on me for sure.

Just for info, I had a Flow Lab about 10 years ago.
It always read higher than any SuperFlow 600 under the same conditions on the intake side & the software was horrible,, very "quirky" The idea was great but Oz wasn't real good at finishing project he started,,, kind of like the Cam Doctor,, great hardware but the software sucked. I upgraded the Cam Doctor to Audie's stuff.
I just corrected the numbers down on the intake side of the flowlab by 3% or 4% from memory & then they seemed pretty close to the "industry standard" but the repeatability was horrible on the bench I had,, really changed with temps

If I remember correctly David Vizard told me the same thing when I discussed the bench with him as he had both for a while.
Another shop that had both was a well known head porter in Utah I think but I can't remember the name right now.

Those numbers are probably right on the money. We've delivered over 24 engines using these heads as of today, with the 320cc runners on 4.500" bores (9.75:1 C.R. and 540"), and are making over 750 HP and 710 Ft.Lbs. torque with a retro-fit Comp-Cams Hydraulic-Roller. When we substitute a solid roller and bring the C.R. a bit higher (10.75:1-still running on 93), we are well past 800HP and 750 Ft.Lbs. The Hyd. Roller engine works at lower RPM (6100/6200), where the Solid Roller works at a higher RPM (6600/6700). This is with the Pro-Toplines basically "out-of-the-box". We been saying for a long time, these are "killer" heads without any serious porting to speak of and we've able to sell them for well under 2500.00 for the pair complete, including Titanium retainers. We are hoping Comp Cams (RHS) doesn't make too many changes in the castings. The numbers we see on ANY of our 3 "Superflow" flow benches all confirm our test results. The 320cc heads from the "box to the bench" all flowed around 375 intake/ 275 exhaust @ .700" lift on 4.500". I've posted this before, but we're in kind of a unique spot with building engines as we can flow heads/intakes, build and dyno engine, and then run it at the track for respective times. If any numbers don't "jive" we can find out easily why! The only items I question in the above post are the bore size for the test and the actual amount of grinding beforehand. The numbers do appear a little high for the size, but with proper grinding, they'd be OK.

Harold: My friend that owns a machine shop has the Flow Lab. He's had it for a while, obviously since the guy that made them went out of business.

Mike: I have no doubt there are differences in actual numbers between different flow benches. I'm pretty sure you could flow the same set of heads on three different Superflow 600's and get three slightly different results. As well, you can move the head around on the Superflow 400 I used to use, and get different readings, you can't do that on this one.That is why I posted the type of flowbench used and all the info I have. I'm not building a Pro Stock motor so I really don't care if the heads flow 400, or 380, I just posted what the flow bench told me. As far as repeatability, the only port we flowed twice was the #7 exhaust, with the tulip valve. The numbers were virtually the same but with less turbulence. The tulip had a little better numbers at lower lifts. As far as the temp, it was every bit of 97* in the shop, we weren't running the air conditioner. The software seemed fine to me, no bugs or problems that I noticed, and I'm the IT guy for the phone company I work for.

GOSFAST: It was 4.310 all the way through the fixture. As far as the grinding, I'm not new at this(started porting heads over 10 years ago). I've done dozens of set of heads from BBC to V6 buick to an inline 6 cylinder in a Jeep. I'm not the best but I would say the work done was of decent quality. Again all I really did was blend the bowls, blend/smooth the chambers, a gasket match, and back cut the valves. Of course, my definition of a bowl blend might be a little different than others. The exhausts got the top of the ports opened a little to make more of a "D" shape to match the header tube a little better. I doubt that helped the flow much if any. My friend also loves the Pro Toplines, it's about all he will sell. Most bang for the buck is his selling point. I didn't buy these heads from him by the way, got them off ebay, I believe they are blems even though the guy I bought them from says they are not. And I don't have anywhere near 2500.00 in them and bought them complete. He also dynos every motor he builds, and a lot of the time it is with heads he ported himself. He's pretty well known in our part of Texas as being very good at what he does, and he has taught me most of what I know about porting heads. I will probably dyno my 489 as well but I will build it myself.

All in all I would say the numbers may be high from other peoples experience, I have none with this flow bench, or with these heads. I just posted the actual numbers from the testing, good or bad, right or wrong. My friend recently built a 489 very similar to mine, but with more cam, and he ported the heads. I believe it made 802 HP with a holley 1000 4150 style carb, so that is right in line with what GOSFAST is doing as well. It is in a Texas True Ten Five, True Street '68 Camaro that weighs 3400 with driver. It has been 5.89@117 (1/8th) on street tires through the mufflers with a 200 shot of nos(delayed about .4 off the line), and only cal-tracs for the rear suspension. Anyway, sorry for being long winded, and thanks for the comments. I hope to get this thing going in a month or two. I value all of you guys advice/experience.

My post was not intended as a knock on your heads or numbers just some facts regarding the bench.

I don't even know what a SuperFlow 400 is?? I know what the 60. 100/120/ old now defunct 300, 600, 1020 & 1200 are but was not aware they made a 400
Regardless, the bench has nothing to do with "moving the head" it is the adapter you are using.

And when I sold the 520 it was a lot better with regard to repeatability than when I first got it but still changed a bunch with varying plenum temps.
If you kept the plenum temps close it was much better & I can only assume this was mostly software related as it got better with a couple of upgrades but partly due to the temp probe he used which tended to be "behind" the software according to what I could find out.

I ain't doubting your numbers just telling you & others what to expect when comparing them to a set flowed properly in an honest fashion on the "industry standard" bench & I have no doubt the heads will make power, never implied they wouldn't,,,

I have never even seen a BB Pro head so I can't comment except for what I have seen on the small block stuff & in the last few years I haven't been very impressed with the quality control.
Not a bad head if you want to make it right but out of the box the low lift numbers were no where near close among other quality control problems I have posted before & it looks from you numbers that the low ones are still not up to advertised which was one of my big bitches with the small block ones.

The only reason I posted is because I have had experience with the FlowLab bench & I along with some other well respected folks have had the same experience with this particular bench.
I worked with Oz on this a little when I could get in contact with him but the problems were not completely resolved in my case.

Those advertised numbers would be about what I would expect with a good 320cc head on a 4.310 bore but your upper numbers seem high to me on a 4.310 bore and again on my bench or an honest SuperFlow if the BB Pro head is as good as you say.

Here is the difference between bores on a CNC 315 AFR
I didn't reflow the exhaust.
Check the low & mid numbers,, this is why I am a big fan of the AFR head.
Obviously this is the "good" port but all manufactures advertised numbers are with the "good" port too :)
Biggest problem is finding out what they are using for an adapter,,, :(

This is off my bench not advertised.
Radius inlet, 28", no pipe
4.530" 4.310"
..050 - 40/34 43.4
.100 - 78/69 78.1
.200 - 164/142.5 162.3
.300 - 247/198 239.5
.400 - 309/240 290
.500 - 350/267 334.4
.600 - 375/280 358.3
.700 - 383/283 374
.800 - 381/286 377

And again, the bench is just a tool & if you flow the head & then make an improvement assuming you don't kill airspeed or screw up the port shape on the same bench than the engine should respond accordingly

I don't understand your statement "You can't move the head around unless you are using the head dowels to index the head which is what I do.
You can move the head on any bench if you want to "cheat" the numbers, it just depends on how you are attaching it.
I happen to use a Mondello Slider which uses the dowels & puts the head back in the same position every time just like on an engine.
Anyone who moves the head around on a bench is just amusing himself in my opinion just like comparing flow numbers with different bore sizes, with different radius inlets, with or without a pipe,,,,, the list goes on

And again, this was not an knock on your numbers just an explanation from past experience with the FlowLab bench.

The setup we used is the one you described, with dowels and a slider. The other bench I had used in the past would only measure up to 400 cfm @28 inches. Above that you had to go down to 23 inches or something, and do the math to convert it. Maybe it was a SF300, not SF400, that was several years ago. What I meant about moving the head around on it is you just clamped the head to the fixture, which was 4.25 by the way. It was made of thick clear plastic, so you had to look through from the bottom side and center the chamber over the hole. Not very good for repeatability, but that is what you did. The slider and dowel is a much better setup. My current heads were flowed with a 1/2 inch clay radius, and no pipe on the exhaust. The fixture had 4.310 stamped or machined into it. It had valve reliefs ground into the top, just like my block will have. I don't know if the numbers are high for this type head and a 4.310 bore. I have only seen data for two of these pro heads, mine and the other set I mentioned, which by the way were about 5 cfm better than mine at .700, and were 423 cfm @.800. These were fully ported. Again, measured on the same flow bench. So I can go ahead and subtract 4% from the numbers the flow bench gave me and I am still happy with the results. I really didn't expect them to be any better than what Pro Topline advertises anyway so the rest is gravy. So thanks Mike for the info on the Flowlab, you obviously know your stuff.

I think you should dump them while you still can. :D I've got a set of SWEET 781's that some dude FULLY PORTED and they Rock! :thumbsup: I'll trade you straight up and I'll even deliver them and pick yours up for no charge....

You wish! :p Hey, I thought I told you to stay off the computer and get that POS farm truck runnin! :D

new motor mounts and transmission crossmember will be here tomorrow. Guess what I'll be doing this weekend... :D Exhaust and alignment on Monday.... dragstrip Friday????

Wow Mike, some pretty big name dropping, Vizard, Oz, wasn't there a movie named something like that? Were not in Kansas any more Toto!
I found a picture of the type of fixture I was talking about that I had used in the past. It is sitting on a Flowlab 520. The Flowlab 520 is sitting in David Vizards shop. The picture came from an article in Mopar Muscle Magazine, where the author quotes flow data obtained from the Flowlab 520, with the fixture that doesn't positively locate the head over the bore in the same position every time. Looks kind of interesting to me.
http://moparmusclemagazine.com/techarticles/p39445_image_large.jpg
I don't know how old the article is, and I'm sure you don't see anything like this in Vizards shop these days. I'll probably get run off the board for posting something like this, but you are the one who mentioned Vizard in the first place. Anyway, I'm just trying to have a little fun so don't take me too seriously. I'm sure if we ever met in person we would get along just fine. :beers:

Wow Mike, some pretty big name dropping, Vizard, Oz, wasn't there a movie named something like that? Were not in Kansas any more Toto!
I found a picture of the type of fixture I was talking about that I had used in the past. It is sitting on a Flowlab 520. The Flowlab 520 is sitting in David Vizards shop. The picture came from an article in Mopar Muscle Magazine, where the author quotes flow data obtained from the Flowlab 520, with the fixture that doesn't positively locate the head over the bore in the same position every time. Looks kind of interesting to me.

I don't know how old the article is, and I'm sure you don't see anything like this in Vizards shop these days. I'll probably get run off the board for posting something like this, but you are the one who mentioned Vizard in the first place. Anyway, I'm just trying to have a little fun so don't take me too seriously. I'm sure if we ever met in person we would get along just fine. :beers:
=
Lol,,, First ,, if you knew me you would know I do not "drop names",,:D
I would not exactly call using Oz's name as "name dropping as I wasn't real pleased with him or his "customer service" at the end & anyone who has his bench can tell you why if they got it from him.
Same deal with the Cam Doctor, great ideas, just a "slight" lack of follow-up,,

Just completely dropped off the face of the earth as far as the Quadrant Scientific deal went which was the name of his company & I believe there are a few folks still awaiting benches & cam doctors although I doubt they are standing out by the mail box any more :sad:

The Reason I contacted Mr. Vizard was he was the only person at the time that I knew had one & I needed some help & getting it from Oz was impossible,, trust me, I tried,,,
I needed to know if it was something I was doing or was the bench that was giving me fits.
He was quite helpful as were the folks in Utah that had both benches in the same location along with a good friend who had an SF600 & this is where the "corrected" numbers came from. I took my bench to his shop & we tested a few heads & kind of took an average of the differences.
BTW, I had one of the standard flow adapters like the one in your pic & used properly they work very well if used properly.
One way it is done is to use a head gasket with button head screws for different type heads installed to locate the gasket. From there it is very easy to locate the head with repeatability,,
Here is another pic of your favorite bench from some years ago in my shop..

http://wsm.ezsitedesigner.com/share/scrapbook/19/190264/Flow_Bench_2.jpg


Just for info to anyone who has visited my site,, the bench I have now is a FlowData & is nothing like the bench we are discussing here which is a FlowLab,, two completely different deals,,

Hi Mike,
If you have an Audie Flow Data flow bench now, how does it compare in general to a SF600 if you know? It seems a hair conservative, although I flowed a set of my heads on it and it seemed close to what I remember from a superflow a long time ago.

Mike, I don't have a favorite flow bench. I have never owned one and have only used two in my entire life. I just wanted to poke a little fun, thats it. I totally agree with you since you did back to back testing between the two, because I certainly have not done that. I don't have the time anymore to spend porting and flowing heads for other people. I barely have time to do my own these days. :sad: The numbers I posted were for reference only. The friend of mine that owns the flowlab has used the older superflow I talked about, and a SF600, both while working in other machine shops before he opened his own in about 1998. He was the chief head guy at a pretty well known shop that is located in Lubbock,TX now. I have no idea why he chose the flowlab, I'll have to ask him. Anyway I think weve beaten this topic to death :clonk: so I'm movin on. Thanks again for your info on the flowlab. Oh, and maybe you could get your hands on one of the Pro heads and do a little back to back testing against the AFR's or others. That would be great information to have!

PS: I am going from a 468 to a 489, gaining about one point in compression, going from heads that flowed in the 310-320 range to ones that flow in the 370+ range, and losing about 50lbs or more right off the front of my car. If you look at the picture in my sig, you can see that soon I will be looking at the sky with a big smile on my face every time I get to go to down the track! LOL :thumbsup:

new motor mounts and transmission crossmember will be here tomorrow. Guess what I'll be doing this weekend... :D Exhaust and alignment on Monday.... dragstrip Friday????
I'll be out of town until Monday afternoon. I'm expecting to get a ride in the fastest farm truck in town on Tuesday. Can I hold you to that? :thumbsup:

"and the hits just keep on coming....." :(

From the UPS website: --> Your package is in the UPS system and has a rescheduled delivery date of Jul 18, 2005.

It's looking like Wednesday now....

Hi Mike,
If you have an Audie Flow Data flow bench now, how does it compare in general to a SF600 if you know? It seems a hair conservative, although I flowed a set of my heads on it and it seemed close to what I remember from a superflow a long time ago.
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Hi Doug,
Audie does the data acquisition hardware & software not the bench. You can buy & put his stuff on almost any bench.
The FlowData is designed & built by Rick Blood who owns FlowData & if you get the bench with the Audie stuff Rick builds everything in.
You end up with one lever for intake & exhaust flow & everything else is handled by the computer.
Being a lfe or laminar flow element bench it is very repeatable but to "qualify" it to the "industry standard" SuperFlow you need to be able to test, or have some honest tests on both as the bench's will differ somewhat depending on the lfe.

You are correct, on the intake side it will normally be down from a SuperFlow.
Just to know where I was at, I have had both AFR & Brodix flow a number of ports on their benches under known conditions before sending me the heads & had a friend that has a 600 flow a few so I now have an excellent correction to SuperFlow numbers.
On my bench the exhaust is within a few CFM across the board & the intake needs a 6% correction.
Very simple with Audie's stuff, you just do it in the software.
I personally don't care what the numbers are as long as they repeat but if I show a 6% lower number to customers they will have a fit because it seems a lot of people take what they read in magazines or advertised data as gospel & as you know,,, it ain't necessarily so,,,, :sad:

Mike, I don't have a favorite flow bench. I have never owned one and have only used two in my entire life. I just wanted to poke a little fun, thats it. I totally agree with you since you did back to back testing between the two, because I certainly have not done that. I don't have the time anymore to spend porting and flowing heads for other people. I barely have time to do my own these days. :sad: The numbers I posted were for reference only. The friend of mine that owns the flowlab has used the older superflow I talked about, and a SF600, both while working in other machine shops before he opened his own in about 1998. He was the chief head guy at a pretty well known shop that is located in Lubbock,TX now. I have no idea why he chose the flowlab, I'll have to ask him. Anyway I think weve beaten this topic to death :clonk: so I'm movin on. Thanks again for your info on the flowlab. Oh, and maybe you could get your hands on one of the Pro heads and do a little back to back testing against the AFR's or others. That would be great information to have!

PS: I am going from a 468 to a 489, gaining about one point in compression, going from heads that flowed in the 310-320 range to ones that flow in the 370+ range, and losing about 50lbs or more right off the front of my car. If you look at the picture in my sig, you can see that soon I will be looking at the sky with a big smile on my face every time I get to go to down the track! LOL :thumbsup:
=
Just looked at your pic,,, very, very nice :thumbsup: I do believe you will be "grinnin" with the new combo,,,

I had a 69 Z "few" years ago & man does your pic bring back some memories,,,

Here is a couple of pics of it, it was the factory Marina Blue (I think that's what it was called??) & white paint. This is about 1971 or so from memory.
482 with a clutchflight & 4.88's at this time
All steel except hood,

http://wsm.ezsitedesigner.com/share/scrapbook/19/190264/Camaro_1.JPG

http://wsm.ezsitedesigner.com/share/scrapbook/19/190264/Camaro_2.JPG

If I get the chance I would love to flow a set of the Rat Pro's as I always like input & really do appreciate the numbers you posted, already copied them & added them to my stuff I like to keep,,
All I had before were the numbers they advertised & I don't put a lot of faith in most advertised numbers from what I see in the "real world" ,,
Your numbers follow what I have seen on their small block stuff, right there at higher numbers but down in the low & mid lift stuff.

jbird.....NICE camaro! That looks beautiful. You have any more pics of that to share? I love the 67-69 Camaros. Had a 68 SS 4-speed convertible myself. Unfortunatey, I totalled it. :(

Wolf....Those pics are "nostalgic". Cragar S/S rims with slicks. :eek:
Neat! I like the "frustration" on the quarter panel.
I see by the hood scoop, you were even pushing the Isky brand back then as well....DOH!!

OK,

Who's Oz??

And what was the trouble with the Cam Doctor?? Was it the SIMULQ program that was used to convert data points to create an equation for a curve??

pdq67

OK,

Who's Oz??

And what was the trouble with the Cam Doctor?? Was it the SIMULQ program that was used to convert data points to create an equation for a curve??

pdq67
=
Oz is Oz Anderson & he owned Quadrant Scientific and designed & built both the FloLab bench & the Cam Doctor among other stuff.

The Cam doctor is very accurate but the software was DOS & it was a PIA to get to more than one point of data.
With his hardware & AudieThomas's Cam Pro Plus software life is good.
Complete graphing capabilities, cam card print out, print out by cam or crank degree, by lift, move the intake or exhaust lobes on the fly, input advance or retard, input different lash, rocker ratios, measure runout,,, more damn information than you could ask for
Unless of course your name is Harold,,, :D :D

=
Oz is Oz Anderson & he owned Quadrant Scientific and designed & built both the FloLab bench & the Cam Doctor among other stuff.

The Cam doctor is very accurate but the software was DOS & it was a PIA to get to more than one point of data.
With his hardware & AudieThomas's Cam Pro Plus software life is good.
Complete graphing capabilities, cam card print out, print out by cam or crank degree, by lift, move the intake or exhaust lobes on the fly, input advance or retard, input different lash, rocker ratios, measure runout,,, more damn information than you could ask for
Unless of course your name is Harold,,, :D :D Hi Wolfy, This is the other Harold. I once had a FlowLab 520 on order. I think it was late in 1998 as best i can remember. The bottom line is i never got it. Oz's real name is William Hartley Anderson. I got very familiar with him in the two years i tried to get him to finish my flowbench. I still like him, despite the fact he never delivered what he promised and the last i heard he was living in California near Sacramento after going out of business in Colorado. If anyone has any updated info. i'd be interested to hear whats become of him. By the way, what did the nice Camaro run? There was a guy here that had one that was very similar looking. I saw an add the other day in one of my magazines or Drag newspapers saying that UltraDyne is back and giving a Senatobia, Ms. address, do you know what gives with that?

Hi Wolfy, This is the other Harold. I once had a FlowLab 520 on order. I think it was late in 1998 as best i can remember. The bottom line is i never got it. Oz's real name is William Hartley Anderson. I got very familiar with him in the two years i tried to get him to finish my flowbench. I still like him, despite the fact he never delivered what he promised and the last i heard he was living in California near Sacramento after going out of business in Colorado. If anyone has any updated info. i'd be interested to hear whats become of him. By the way, what did the nice Camaro run? There was a guy here that had one that was very similar looking. I saw an add the other day in one of my magazines or Drag newspapers saying that UltraDyne is back and giving a Senatobia, Ms. address, do you know what gives with that?
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Hi other Harold :waving:

So, I am assuming you were not one that paid in advance,,, I heard a few were not quite as happy with their outcome :(
Last time I heard Oz was working for DTS for a while but he isn't there anymore I don't think.

It ran hi 9's, high 130's best of 9.80 from memory. Put the engine in a Vega after that.

Bullet ended up with all the Assets of Ultradyne,,, except the most important one,,, ;)

Hi Wolfy, Unfortunately i am one who paid up front (hence the reference to J.W. labeling me "stupid"). I went to Lewisville, Colorado once in about '99 and there were several benches in partial stages of completion but nobody in sight. A little more update on Oz. He did work for DTS but i got the distinct impression that he got fired there even though they didn't come right out and say so. It was just before the time they moved to the town in which they now reside. I talked to Oz about that time and he no longer worked for them. I think the man suffers from bad bouts of depression and i still wish him no ill will. The UltraDyne information is pretty recent, certainly after when their stuff was bought out by Bullet and as far as i know UD Harold now lives in Senatobia, Mississippi which is about 30-35 miles south of Memphis. I kinda wonder if he repurchased the name and started production again.

I had posted earlier that I would share the flow numbers on my heads that will be going on my 489. These are 320cc aluminum with a bowl blend and gasket match and blended chambers. I only flowed two cylinders #5 and #7 for a comparison. They were flowed on a Flow Lab 520 with a 4.310 bore fixture(all the way through). This flow bench locates the head with a head gasket just like it would be bolted on the block. I mention that because the flow bench I used to use was a Superflow 400 and it was not this way. You could move the head around on the fixture. It is also computer controlled and calibrated.
#5 Intake:
215.2 @.300
270 @.400
342.3 @.500
374.7 @.600
395.9 @.700
406.5 @.750
#5 Exhaust
157.8 @.300
187.8 @.400
225.2 @.500
255 @ .600
282.7 @.700
291.7 @.750

#7 Intake
223.9 @.300
291.1 @.400
334.8 @.500
358.8 @.600
376 @.700
368.1 @.750
#7 Exhaust
148.6 @.300
179.9 @.400
212.1 @.500
256.1 @.600
277.5 @.700
288.2 @.750

There was a bigger difference between the "good"(#'s 1 & 5) and the "bad"(#'s 3 & 7) intake ports than I thought there would be. I have ported and tested mostly GM castings in the past and I know they vary a good bit but I expected aftermarket heads to be a little closer to equal. I'm sure I could tweak these ports and get them closer but I'm not sure I will. The exhaust ports had quite a bit of turbulance so I radiused the edges of the chambers below the exaust valve and radiused the edge of the valves themselves to try to reduce it. I haven't flowed them again to see if it helped or not. We tried a tulip exhast valve and it helped the turbulence but didn't make much difference on the actual flow numbers. If I decide to flow them again I'll repost the new numbers.
HI WAS WONDERING IF IT WOULD BE POSSIBLE TO GET A COPY OF A FLOWLAB MANUAL. ILL PAY FOR A COPY .HERES MY PROBLEM I BOUGHT A FLOWLAB 520 IN DEC FROM SHOP IN WI . WAS GOING OUT OF BUSINESS .REFERENCE MANUAL ONLY GOES UP TO PAGE 24 TAKING DATA .IT SHOULD GO UP TO PAGE 86 .IM PRETTY ANXIOUS TO FLOW MY HEADS .BUT CANT GET ANY DATA ON NEXT SCREEN .ALSO IF YOU MIGHT BE ABLE TO MAKE A COPY OF THE 3 1/2 FLOPPY WOULD BE GREAT IM PRETTY MUCH DEAD IN WATER ,WITHOUT KNOWING HOW OPERATE .IM IN OHIO MEDINA MY # 330-948-2088 DALE

HI WAS WONDERING IF IT WOULD BE POSSIBLE TO GET A COPY OF A FLOWLAB MANUAL. ILL PAY FOR A COPY .HERES MY PROBLEM I BOUGHT A FLOWLAB 520 IN DEC FROM SHOP IN WI . WAS GOING OUT OF BUSINESS .REFERENCE MANUAL ONLY GOES UP TO PAGE 24 TAKING DATA .IT SHOULD GO UP TO PAGE 86 .IM PRETTY ANXIOUS TO FLOW MY HEADS .BUT CANT GET ANY DATA ON NEXT SCREEN .ALSO IF YOU MIGHT BE ABLE TO MAKE A COPY OF THE 3 1/2 FLOPPY WOULD BE GREAT IM PRETTY MUCH DEAD IN WATER ,WITHOUT KNOWING HOW OPERATE .IM IN OHIO MEDINA MY # 330-948-2088 DALE
=
Hi Elad.
Just for your info the manual was never finished just like a lot of Oz's projects :(
You probably have all there is,,,

If Jay doesn't have access to the disk it I may still have a copy of the software around but it has been about 10 years so I am not sure
I will try to remember to look for it on Monday
If I forget you might email me as I get a ton of email, pm's & phone calls & sometimes have been known to get sidetracked on occasion :D

Hi Wolfy, This is the other Harold. I once had a FlowLab 520 on order. I think it was late in 1998 as best i can remember. The bottom line is i never got it. Oz's real name is William Hartley Anderson. I got very familiar with him in the two years i tried to get him to finish my flowbench. I still like him, despite the fact he never delivered what he promised and the last i heard he was living in California near Sacramento after going out of business in Colorado. If anyone has any updated info. i'd be interested to hear whats become of him. By the way, what did the nice Camaro run? There was a guy here that had one that was very similar looking. I saw an add the other day in one of my magazines or Drag newspapers saying that UltraDyne is back and giving a Senatobia, Ms. address, do you know what gives with that?

Harold,

I saw Oz at PRI this year but did not have an opportunity to speak with him. Last I knew he was the R&D Engineer at Hasselgren Engineering.
http://www.hasselgren.com/
bob

Talk about bringing back the dead.

pdq67

Harold: My friend that owns a machine shop has the Flow Lab. He's had it for a while, obviously since the guy that made them went out of business.

Mike: I have no doubt there are differences in actual numbers between different flow benches. I'm pretty sure you could flow the same set of heads on three different Superflow 600's and get three slightly different results. As well, you can move the head around on the Superflow 400 I used to use, and get different readings, you can't do that on this one.That is why I posted the type of flowbench used and all the info I have. I'm not building a Pro Stock motor so I really don't care if the heads flow 400, or 380, I just posted what the flow bench told me. As far as repeatability, the only port we flowed twice was the #7 exhaust, with the tulip valve. The numbers were virtually the same but with less turbulence. The tulip had a little better numbers at lower lifts. As far as the temp, it was every bit of 97* in the shop, we weren't running the air conditioner. The software seemed fine to me, no bugs or problems that I noticed, and I'm the IT guy for the phone company I work for.

GOSFAST: It was 4.310 all the way through the fixture. As far as the grinding, I'm not new at this(started porting heads over 10 years ago). I've done dozens of set of heads from BBC to V6 buick to an inline 6 cylinder in a Jeep. I'm not the best but I would say the work done was of decent quality. Again all I really did was blend the bowls, blend/smooth the chambers, a gasket match, and back cut the valves. Of course, my definition of a bowl blend might be a little different than others. The exhausts got the top of the ports opened a little to make more of a "D" shape to match the header tube a little better. I doubt that helped the flow much if any. My friend also loves the Pro Toplines, it's about all he will sell. Most bang for the buck is his selling point. I didn't buy these heads from him by the way, got them off ebay, I believe they are blems even though the guy I bought them from says they are not. And I don't have anywhere near 2500.00 in them and bought them complete. He also dynos every motor he builds, and a lot of the time it is with heads he ported himself. He's pretty well known in our part of Texas as being very good at what he does, and he has taught me most of what I know about porting heads. I will probably dyno my 489 as well but I will build it myself.

All in all I would say the numbers may be high from other peoples experience, I have none with this flow bench, or with these heads. I just posted the actual numbers from the testing, good or bad, right or wrong. My friend recently built a 489 very similar to mine, but with more cam, and he ported the heads. I believe it made 802 HP with a holley 1000 4150 style carb, so that is right in line with what GOSFAST is doing as well. It is in a Texas True Ten Five, True Street '68 Camaro that weighs 3400 with driver. It has been 5.89@117 (1/8th) on street tires through the mufflers with a 200 shot of nos(delayed about .4 off the line), and only cal-tracs for the rear suspension. Anyway, sorry for being long winded, and thanks for the comments. I hope to get this thing going in a month or two. I value all of you guys advice/experience.Those heads go 400 on a Super flow 600, if there done right. Now Jbird ask your head buddy what he would do to get that bad port flowing, curious to his answer. 5.34 @ 3050, !.18 60 foot, 10.5, conventional head, PSCA hot street, normally aspirated.

I have used them with just a valve job and bowl clean up. NO OTHER PORTING just how they came out of the box.

320cc heads....

9.2 to 1 comp ( pump gas ) 496ci

650hp @ 6200
600tq @ 4900
486tq @ 4000
511tq @ 4100

This was run on a SuperFlow 901 w/ 2" hooker headers and 38* timing

I did not flow them on my SF-600 but I will. We are thinking of cutting the heads to bring the comp up to 10.5-11to1 and see what it will make.

Tom