318 power!

rumblefish360 said
Thanks @Mattax for posting that. Such a simple and honest question has so many rules explaining stuff.

Dan, I wouldn’t touch 302 heads if you paid me to run them. If you produce a 6 figure envelope, don’t expect me to campaign a season!

IF you want to increase the performance of any engine, but we will focus on the 318 for the moment specifically, I’ll tell you what I would do and that would be a set of Edelbrock heads. I’m not a big Speedmaster fan. BUT! If the work ($$$$$$) for you, go right ahead.

Screw J heads, to much work for a smaller payout than an aluminum head.

IF, and only if, you already had some 302 heads that were done and ready to rock or found some at bargain basement prices and the rest of your build was budget oriented and designed around them, then sure, i'd run them with the caveats that: 1. i'm not racing, b. i'm not expecting world beating power and III. i didn't have another option that was basically free.

there's just so many other options that are objectively better that require basically zero specialist work and have the potential to make gobs more power.