foose04

iTrader: (3)

I currently have stock 862's. Would it be worth the swap, maybe. We'll see how things go, but they may end up on this year if I want to start pushing closer to 25psi.

Their info:
Combustion Chamber Volume: 61.15cc
Compression Ratio: 9.5:1
Intake Port Volume: 200cc
Exhaust Port Volume: 70cc
Intake Valve Diameter: 1.89 inches
Exhaust Valve Diameter: 1.55 inches

Stock Head Flow Numbers
Chamber 61.15 cc----0.100--0.200--0.300-- 0.400--0.500---0.550---0.600
Intake 200 cc----------63 ---128----179-----210----218----221-----226
Exhaust 70 cc----------54 -- 93 ----121----145-----163----168----174


My 317's are cleaned up to 69cc.

Combustion Chamber Volume: 71.06cc
Compression Ratio: 10:1 LQ9 Flat top pistons
Compression Ratio: 9.6:1 LQ4 Dish piston
Intake Port Volume: 210cc
Exhaust Port Volume: 75cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches

Stock Head Flow Numbers
Chamber 71.06cc----0.100---0.200--0.300--0.400--0.500--0.550--0.600
Intake 210cc-----------66-----142-----196---228----236---238-----240
Exhaust 75cc----------59-----104-----137---155----167---173-----177

foose04

iTrader: (3)

It's a circle D, multi-disc, 2b stall. 28-3000.

Jake99

iTrader: (5)

Nice race with the stang! you think going with such bigger chambers would be an advantage? If I ever get mine pushed as hard as yours I had planned on a milled ls6 head, that way I get a little bigger runner, bigger intake valve and match the stock 9.5 cr. Might work out good when you spraying n20 throw it tho.

smokeshow

iTrader: (16)

You'd lose a considerable amount of compression with those heads, as I'm sure you know. May not even be worth it.

foose04

iTrader: (3)

Yeah but with some timing room of E85 and larger chamber to welcome airflow volume, plus the valves/ports, I think it would be ok.

My hold up is I can bottle feed it or boost it to where I think the internals will give before the added head HP is even really needed.

smokeshow

iTrader: (16)

In that case, I know someone who would be interested in those heads lol