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Old 06-20-2013, 04:43 PM
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Originally Posted by SPEED MASTERS CC View Post
I am considering changing cylinder heads from the current 64cc chambered 200 cc Sportsman 2's to 50cc chambered 220 cc heads from engine quest.

The engine is a 408 sbc, 11.7-1 compression, 250 duration at .05/.575 lift on a 106 lsa. The intake is a edelbrock dual quad. The fuel is E-85.

Would there be a worth while gain in output for the above combo?
I would be far more concerned with the flow of the heads than I would be with increasing the static compression ratio. If you found the right heads, you could make more power while lowering the static compression ratio.
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