AFR Heads

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Ironmike said:
Agree 100%. Here's what my Eddy's flow after HAND porting by a pro. Check out the mid lift numbers especially. These kill out of the box TF's.

.100 64
.200 155
.300 233
.400 280
.500 298
.600 307
.700 309
.800 311
Click to expand...
Really nice .300/.400 numbers :)
 
Ironmike said:
Agree 100%. Here's what my Eddy's flow after HAND porting by a pro. Check out the mid lift numbers especially. These kill out of the box TF's.

.100 64
.200 155
.300 233
.400 280
.500 298
.600 307
.700 309
.800 311
Click to expand...
What size intake valve ?
 
Ironmike said:
Agree 100%. Here's what my Eddy's flow after HAND porting by a pro. Check out the mid lift numbers especially. These kill out of the box TF's.

.100 64
.200 155
.300 233
.400 280
.500 298
.600 307
.700 309
.800 311
Click to expand...
What valve size?
 
2.08 intake. Running a Lunati solid roller .640/.640 259/265 duration. Ported Super Victor(by my head porter) and a Holley XP 850.

Oh yeah Scat forged 4 inch crank. 11.25:1 compression. 4 speed, 430 gear. soon to be back to 410.

old pic. Swapped those heavy Cragars for American Racing aluminum that look almost the same. Ya wouldn't believe the weight difference!
car.jpg
 
Had to look at my paperwork, thought I made a typo. Think I did, but not there. Those are the numbers I have. The guy who ported them was the lead port guy for a VERY well known Mopar shop. I can give ya his name if you PM me, but he asked not to throw his name all over the internet. Also when I sent him the heads, he was supposed to just flow them for me. He wasn't really looking for work.

And ya know what? I still have a very nice short side radius. Bolt holes are tubed, hence the pushrod oiling. He told me his valve job was key. Our old friend PBR told me the guy's a magician.

Here's the original numbers written by him. The first column is as ported by my dyno guy years ago, at the very end of my "missed on this combo" thread, and column 2 is after he worked them. This all started because I fell pray to all the hype and bought a pair of TF's and immediately knew I lost a bunch. Got his name sent him my old Eddy's and the rest just happened. Put those Eddy's back on and it was like night and day.

flow.jpg
 
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I don’t really get excited about numbers from anyone’s bench but mine….. because those are the only ones I feel can be directly compared to……. Numbers from my bench.

That being said, I see two red flags on the numbers on that hand written sheet from IM.

1-the flow at .100 lift is considerably more on the exhaust than the intake, despite the valve being 30% smaller.

2-84cfm@.100 lift from a 1.60” valve represents 15% more flow than what the area actually will flow.

When I see things like that it makes me question the whole test.

I’ve owned a flow bench and have been testing heads since 1992, and not once have I encountered an anomaly like that.
 
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Head porting, to me is like quantum mechanics or dark matter theory. I wouldn't even think of trying to understand it all. Maybe you're right, maybe not. But time and MPH do not lie.
I certainly have no reason to doubt the guy. Maybe he wrote the wrong numbers down?

After a full summer with those heads, I really don't care about the flow numbers. I just know they are a DRASTIC improvement over the TF's or the original hand port job. So I'm happy.........
for now.
 
PRH said:
I don’t really get excited about numbers from anyone’s bench but mine….. because those are the only ones I feel can be directly compared to……. Numbers from my bench.

That being said, I see two red flags on the numbers on that hand written sheet from IM.

1-the flow at .100 lift is considerably more on the exhaust than the intake, despite the valve being 30% smaller.

2-84cfm@.100 lift from a 1.60” valve represents 15% more flow than what the area actually will flow.

When I see things like that it makes me question the whole test.

I’ve owned a flow bench and have been testing heads since 1992, and not once have I encountered an anomaly like that.
Click to expand...
went back and looked around a bit. #1 on your red flags seems to be maybe not so red? The pic below is from a post made by Pittsburgh Racer. Speedmasters. Check out the flow at .100. Exhaust considerably more than intake.
NOT arguing, just observing.
pbr.jpeg
 
In 33 years, I’ve never had any port on any head, no matter who ported it, flow 100+% efficiency D/C(or even right at 100%).
100% for a 1.6 valve at .100 lift is 72.8cfm.

It’s still a red flag to me.

One thing I think a lot of people don’t really grasp is…….
If you flow the same head on 5 different benches, and get 5 sets of varied results …….the head didn’t get better or worse on the different benches.
Whatever/however that head interacts with a given combo of parts…….. it will do it the same way regardless of which flow sheet you tape to the valve cover.
The head itself still “is what it is”.

The simple fact is, different flow benches can give different results.
And sometimes those numbers are beyond what is physically possible.

Not all that long ago I had the chance to flow a head that was supposedly flowing 105% DC @.100 lift.
I told my customer I was sure it wouldn’t do that on my bench.
It didn’t……. It was showing 75.5% on mine.
 
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B3422w5 said:
The Bloomers are 200cc
They are absolutely a fair fight against anything that isn’t offset.
As people have said, all they are is a speedmaster head with a good port.
All standard port heads were developed for stock stroke stuff. So was the offset W2 and W5 stuff.
Click to expand...
Can these be made offset like the Indy-Brock cylinderheads?
 
Ironmike said:
Head porting, to me is like quantum mechanics or dark matter theory. I wouldn't even think of trying to understand it all. Maybe you're right, maybe not. But time and MPH do not lie.
I certainly have no reason to doubt the guy. Maybe he wrote the wrong numbers down?

After a full summer with those heads, I really don't care about the flow numbers. I just know they are a DRASTIC improvement over the TF's or the original hand port job. So I'm happy.........
for now.
Click to expand...
Well c'mon and share the et and mph difference. Ya can't leave us hanging lol
 
i went and looked up my flow #'s from my W2's. i'm very skeptical about the 2 flow sheets that were just posted. they both kick the crap out of my W2's.
 
9secRR said:
i'm very skeptical about the 2 flow sheets
Click to expand...
I wouldn't be to skeptical about PBR's flow sheet. He put a bunch of work and testing in his head work and his results at the track have proved it over the years.
 
I don’t know about anyone else, but you do hear that ‘330cfm’ number get thrown around a lot recently. On all brands.
 
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