Been tossing the idea around of replacing our CMI E Top headers in exchange for SSM manifolds. Our CMI headers have been great. But while everything is out might just replace it all.

This is a 500efi application. What is required to make the change? Are they plug and play or are modifications required. One of the websites mentioned needing a tool to machine the heads?

I assume this is the setup I would need?

http://www.cpperformance.com/p-16690...dard-exit.aspx

Stainless are plug and play with 500s. 525s are drilled different and you'd need the jig to redrill the heads.

Thanks for the quick response. Assume the link I posted are the right ones..

the newer 525 headers they have both bolt pattern drilled in the flange, they will fit the Edelbrock 525 heads or the standard BBC bolt pattern

Maybe I'm missing something. I was thinking you wanted stainless marine manifolds for the 500s. Admittedly I haven't looked at the link. I'm offshore and my internet is struggling to open it. If the case is stainless marine manifolds on a 500 you shouldn't need anything extra.

I miss read it, oops

Thanks for the responses...looking at the EMI option. Did a bunch of research. Are the SM manifolds that much nicer then the EMI offerings.

As I understand it, EMI are 1800-2200 and the SM are 3300. Huge price difference unless I'm wrong? Even the DAna exhaust are cheaper.

The link above is for 525 or 700 replacement because they have a different bolt pattern. You need standard big block exhaust which is much cheaper

http://www.diamondperformanceparts.c...cat=282&page=1

It might perform well but I really don't like the look!!! Just my opinion.