What rpm did it start to roll over at? Not bad numbers at all, but that was after you ported it right?
The proper combination runs good, not having "street" parts. You need an intake that works with those heads, not an intake that is in the rpm range you think the engine should be in. That is how mismatched combinations are born. I'm assuming this is going on the 408 that you refer to? Use a super victor. Make sure you have the proper cam to make use of those heads as well or you will be disapointed. A 408 is going to make torque just from the size of the engine so there is no need to worry about torque production. My 700 horsepower mill made 400 foot pounds at 2500 rpm and 500 from 3500 and up. Make sure the total combination is right and you will be happy.does anyone know what a good high performance street intake is to match with AFR 205cc heads? i heard the victor jr. but i want a wider rpm range like 1500 to 6200
would the performer rpms match?