Hi Guys,
My '69 Mach1 is an S code with a 390 FE / C6 auto. The heads that are on it are from a Cobrajet motor but it's running a standard inlet manifold with a Holley 600 cfm carb. My question is would I benefit by swapping over to a Cobrajet inlet manifold or just leave it standard.
Many thanks
Simo