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Old 11-06-2011, 11:28 AM
mike Crawford mike Crawford is offline
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Originally Posted by lg1969
yes you can get more horses with smaller CC heads. The less CC in the heads the higher the compression you will get, resulting more horsepower. You just do not take 283 heads and put it on a 327 or 350. You raise the compression but it can't breath because of small ports and valves.
3986336 71 350 76CC
3932441 67-72 327-350 76CC
They are fairly matched
3991492 are 64CC high performance heads. It will wake up the engine.
hope this helps
Just another question ;; I had a 1970 one ton van with the 3932441 heads .
It was a four barrel motor ..
On the tappet pans it had 300 horse ..
IF a 1969 with the same same heads or cc heads had 250 horse with a 2 barrel carb ....

Does the four barrel alone make up the extra 50 horse ..
OR does the 250 horse motor have a different cam ect along with the two barrel vesus the four .
Also the van was a standard ..
And this motor came from an auto
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