FloridianSon

I was going to try the Edelbrock performer RPM 2-0 on the 502 with my merlin oval port heads this year and was wondering if there would be any gains in spending more and running the Merlin dual plane manifold.Thanks James

racinbird

I have the performer air-gap on my 502 with merlin oval ports, has run fine for me. I havent seen any flow numbers however they are both supposed to be good manifolds, I doubt one would be any noticeably different than the other with performance.

formula31

I had really good results with the Weiand Stealth on a similar package.