Head porting is a long, tricky and intricate process, but the power gains can be worth it in the end. To properly analyse and validate the job, a head should be tested first on an air flow bench ...

You should also be aware of head porters shaving 20thou or more off the deck of your heads, they do this to increase the compression ratio of the engine, which can help create more HP, however your deck is thick from factory to handle/withstand cylinder pressure to hold the head down and stop it from lifting, this is why aftermarket heads have even thicker decks than the factory to …

29/03/2017 · If you have the means, the ported LS9 heads clearly provide the biggest performance benefits, and provide some future proofing for a relatively mild build should one choose to add forced induction later. Either way, the folks at Chevrolet Performance can help point you in the right direction.

16/04/2020 · Yes sir, it's a little infuriating that no one seems to have this info. I'll tell yah what fellas, If some one would build a set of bolt on Production Aluminum heads for this engine, I would jump on it. Sure prices would push to the 5-6K + with out a doubt, but I'd jump on it with out even thinking twice. Just my 2 cents.