I am still doing lots of research for hopefully a summer motor build. If my goals were 350fwhp, aluminum heads, decent gas mileage and reliability compared to L03, and ran with a tuned tbi on a roller 350 block, which heads would be best?

These aluminum vortecs that are always available on ebay.

The revised 113 heads from GM performance 12556463

Or do I need to bite the bullet and get AFR heads?

Or is the weight lose to aluminum not worth is time and money?

 

You gotta love people that call their heads "Vortec", but don't show the intake ports in their pics.

And of course, the bit about "drill for your intake pattern" is a dead giveaway that they're trolling for "stupid money". The word "Vortec" is GM's tradename for "we put the intake PORTS in a different place". Meaning, it doesn't matter what bolt holes you drill, if your intake isn't a Vortec pattern, its ports won't match the heads' ports. Might not even completely cover the ports in the heads. In other words, they're hoping that people will bite on the buzzword, for its own sake.

I'd sure want to SEE what those heads REALLY are, and know who made them, and ALOT more about them than is in that ad, before laying down that kind of $$$$ on something. While it's entirely possible that they might be perfectly legitimate and the product is exactly what they say, I'm more than a little skeptical.

 

Another idea for your list is the Edelbrock E-Tech cylinder head. I have seen some really good results with those heads (like beyond similar AFR heads).