[J.C.you]

Originally Posted by mgarblik

What we don't see in any articles I have read through is' "port matching the intake to the heads will hurt HP and Torque". If you are paying someone to do this work on a street car and they want $ 200.00 to do it. Then it may not be "worth it" for a couple HP on a street engine that may not see 4000 RPM. That's why the factory didn't do it and the lousy looking one in this thread made it on a factory engine. But if you are doing the work yourself, a chance to pick up say 5 HP for free is appealing. Labor is yours and making 5 extra HP for a couple hours work on a really bad intake is worth it to most hot rodders. Find 5 HP in 10 places on a blueprinted engine build and you have 50 extra HP when it's all done. We do this every class day at school. The little things add up, the gains don't all come in one place. That's why every engine we dyno, even with stock heads, stock cams, intake, carb and exhaust manifolds always make very close to factory rated HP or a little more. Last year a student did a regular 400 Pontiac for a GTO restoration. Rated at 350 HP. Everything stock, right to the cam and rocker arms. It made 377 HP @ 451 ft. lbs torque

Makes the case for flow testing heads with intake and carb attached. Be sure to tape all runners at the flange except the one pulling from.