[Formulajones]

Originally Posted by reacp911

It's common knowledge that the pontiac edelbrock performer is not as good as even the stock cast iron pontiac restricted secondary manifold.

I'm kind of stuck running the performer because I've got the aluminum D port heads, and I'm trying to keep it looking stock so torquers and RPM manifolds are out.

All edelbrock needs to do is take a stock 455SD manifold and recast it out of aluminum. I'm sure they'd sell lots
Attachment 655663

Attachment 655664

The factory manifolds are already being cast out of aluminum for years. Just get one of those. I can tell you they work a hell of a lot better than the performer and they accomplish a few things for you. They look stock because they are, they will fit the shaker without jacking stuff, it's aluminum so it matches your heads, and they perform as good as the iron intake.

I've done back to back testing with them out of the box on a high 12 second car and it was identical in et and mph to the factory 70 RAIII iron intake.

Easy solution