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Head Flow Numbers

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Old May 19, 2008 | 03:57 PM
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Head Flow Numbers
Thought you guys might like this...

Head Flow Numbers-flowdata3.jpg


3500 For The Win !
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Old May 19, 2008 | 04:02 PM
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Re: Head Flow Numbers
holy **** at the dohc numbers
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Old May 19, 2008 | 05:03 PM
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Re: Head Flow Numbers
Originally Posted by project89
holy **** at the dohc numbers
Yeah, but I was more astonished that the 3500 heads in stock form almost compete with $1800 Abbott heads. This tells me that you are not getting any more air into the engine thn the 3500 heads, unless you go to 4 valves.
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Old May 19, 2008 | 06:59 PM
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Re: Head Flow Numbers
almost makes me want to go with a dohc motor
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Old May 19, 2008 | 09:02 PM
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Re: Head Flow Numbers
Originally Posted by project89
almost makes me want to go with a dohc motor
If you do, go 3.6 DOHC - 300hp
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Old May 22, 2008 | 08:36 AM
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Re: Head Flow Numbers
The stock 3.4 thats at the bottom of the graph, are those the old iron heads or the FWD heads?
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Old May 22, 2008 | 12:38 PM
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Re: Head Flow Numbers
Originally Posted by fictmich
The stock 3.4 thats at the bottom of the graph, are those the old iron heads or the FWD heads?
Those are the iron head numbers. The aluminum heads flow at 145~/210~ at 0.50 lift.
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Old May 26, 2008 | 12:52 AM
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Re: Head Flow Numbers
Originally Posted by grimmcs
Those are the iron head numbers. The aluminum heads flow at 145~/210~ at 0.50 lift.
Thanks!

I'm curious, how many inches of water was the flow bench set at for these tests?
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Old May 26, 2008 | 02:05 AM
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Re: Head Flow Numbers
dam i just missed an ebay auction, 2 bare blocks 2 crank/rod sets 2 pistion sets, 6 sets of heads 1 set just rebuild and 2 gaskets sets and ring sets for the dohc motors
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Old May 26, 2008 | 08:43 AM
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Re: Head Flow Numbers
Forced, can you have the graph maker add these in?

3500 stock intake:
220 CFM @ .550
223 CFM @ .600

those are official
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Old May 26, 2008 | 04:14 PM
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Re: Head Flow Numbers
Originally Posted by Purple82TA
Forced, can you have the graph maker add these in?

3500 stock intake:
220 CFM @ .550
223 CFM @ .600

those are official
Probably, you posted in the thread at FTV6 where he made it


What about the exhaust side?
Last edited by firstfirebird; May 26, 2008 at 04:18 PM.
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Old May 28, 2008 | 12:59 PM
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Re: Head Flow Numbers
firstfirebird - I have flow numbers from the 2.8L carburated iron heads if you want to add that to your graph. They were flowed with 28" of water, was that the setting for the others on your graph?
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