Please answer my question. So what is your opinion and what do you do to solve the AMC's oiling problems, especially for a 8000 RPM engine?
Actually the big chevy has a disadvantage to valve placement and angle, they are only 24* and have huge exhaust valve to bore clearance. They need large wide chambers to achieve that kind of flow. But they do have a advantage of valve size and intake volume. But one more thing I have seen 270 CFM from a AMC only with flowbench testing and porting, not every backyard AMC head is gonna flow 270 CFM, at least I don't think so, have you ever done any head porting/flowbench work?
I don't know what kind of BBC your talking about, since 435 ft lbs sounds like a weak one.
A pipe on the exhaust port increases the flow of any exhaust port, usually about 5-12% above .2 or .3 lift. I have never heard of swirl in the exhaust before, it sounds like a bad thing to me, you don't want turbulence there you want to rid the engine of the spent gases. Please elaborate on the swirl of the dog-leg ports
You are correct though big block chevys aren't cheap and aren't light, but you can't be ignorant, have a lot of horsepower potential. A run of the mill 454 with something like 12-13:1 compression with a single four barrell with a wild solid cam with a flowbench developed factory rectangular port head could pretty easily hit 685-715 Hp, And with some good AFR aftermarket heads a 454 based engine can hit 900 Hp with a single four barrel, not bad considering the 502 has become so mainstream and the 454 is "yesterday's" engine.
I agree though you keep your AMC, I'm not trying to recruit you, just show it isn't the only hot rod engine out there.
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Originally Posted by Lifted79CJ7
