Thread: Old vs new heads

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Originally Posted by rspears

Sorry, I was off base with my reply talking about chamber volume.

You may have been closer to correct than you think. A smaller intake port runner will speed up the mixture and help to pack the cylinders better, resulting in a higher cylinder pressure, the same result you might get with a smaller chamber.

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Thank you. I am having a hard time deciding. I don't want to be winding this thing out all the time. If I take it from 525 hp down to 510 hp that's not going to kill me but I want a good pull and snappy throttle response