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guys I have a USRA bmod with nice flat top motor and im thinking about switching to imca Amod. not looking to win just have some fun. the track i run is a 3/8's that is very dry slick. current motor. prc108 cam, 6" rods, flat top pistons, zero decked, 882 heads, 9-1 comp, 2701 intake with a 4412 carb. new combo same bottom end and cam, add 461 heads that are 64cc, new intake(not sure which one), and a 750 4 barrel. what hp gain would i see with the new combo? NO IM NOT DOING VORTEC HEADS BECAUSE I ALREADY HAVE THE 461's. maybe next year will get some darts.
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nobody uses double hump heads anymore? -
You will gain probly 10-15 hp just because of the compression increase should be at 10.5 now with the smaller combustion chambers. It all depends how much work has been done to either set of heads, but the 461s are definitely a better set of heads than the 882s which are junk IMO.Comment
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Maybe another 25-30 HP going to a 750 4 barrel carb.Comment
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thanks guys. I would hope that since the crate 604's are doing good on our dry slick track with 400hp that my combo should be close and at least be able to have fun and be able to stay out of the way.Comment
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