I know the camshaft choice will determine the powerband, but which of the emissions aluminum heads are the best choice for upper rpm power on a 302. i assume it will be between the twisted wedge and afr165 heads. my guess is the twisted wedges with the chevy size valves. Flow numbers on the AFRs exhaust side say otherwise tho seeing as how i know the poor exhaust flow of the stock heads really cut our upper rpm power in stock form. People here always say one will make power depending on if the mix and match the right parts so it seems like head selection would be a part of that, and almost the backbone that the rest of the setup should be built around in my opinon. In the future i would possibly like to build a setup that pulls really hard up top within streetability limits.(crazy heads and a crazy cam that revs to 7k isn't an option,hehe looking to do the best with the stock short block)
Which heads for upper rpm power
- Thread starter igotyofire
- Start date
well i dont wanna turn this into a this head vs this head thread. But focus on in theory which head will be best and right now im thinking the head with the best exhaust flow is going to make the best power in the upper rpm ranges, correct me if im wrong?
The Trickflows are cheaper and maybe the money saved over the AFR's could be spent on having them ported, but then i am unsure if that is a bit overkill for a stock shortblock?
The Trickflows are cheaper and maybe the money saved over the AFR's could be spent on having them ported, but then i am unsure if that is a bit overkill for a stock shortblock?
Any of the big three will do just dandy 
You won't see all that much diff between em
The rest of the combo is whats gonna make things like you wish.
As a general rule of thumb ... if you focus on top end power ......
you MAY have a bit of a soft low end.
I'd pick an intake that doesn't fall off on the top end (shorter runner) and get a cam that will pull to that range as well.
btw ...... LT's can prop back up a good bit of what you MAY loose with the kind of combo you seem to be wanting.
If you want to see how the various combos stack up against each other and especially in the upper rpm ranges ... you gotta compare dyno pulls to see what is what IMHO.
Of course ... when you do that ... you get to see the ENTIRE rpm range of operation
Grady
You won't see all that much diff between em
The rest of the combo is whats gonna make things like you wish.
As a general rule of thumb ... if you focus on top end power ......
you MAY have a bit of a soft low end.
I'd pick an intake that doesn't fall off on the top end (shorter runner) and get a cam that will pull to that range as well.
btw ...... LT's can prop back up a good bit of what you MAY loose with the kind of combo you seem to be wanting.
If you want to see how the various combos stack up against each other and especially in the upper rpm ranges ... you gotta compare dyno pulls to see what is what IMHO.
Of course ... when you do that ... you get to see the ENTIRE rpm range of operation
Grady
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