Edelbrock aluminum heads

ir3333 said

Could make a good discussion. But if the stock heads stall out around .480 lift can you get 425-450 with a big cam and stock heads? Long duration would surely help but it would have a tough time at lo rpm.
Hang on from 3000 up!

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But under 3000 rpm we spend most time at part throttle which means the engine only making what it needs to do normal driving which is not much and it's only a fraction of the hp the engine capable of even at low rpms. And at full throttle how much time do we spend under 3000 rpms anyways.

There's many ways to make hp, If you look at modern cars is head flow not cam duration in older cars we tend to make up the overall airflow with cams. Good heads and moderate cam decent stall and gears driveability shouldn't be an issue.

Look at LS 4.8 & 5.3 there truck engines a truck engine needs to be streetable and in dyno trim they make 330 & 350 hp out of basically a 273/318 size engines, why good heads then add a decent but still relatively small cam and make well into the 400's hp. Not like we can't do similar idea with parts available to us.