Re: HP rating
Thank you for the input
Ok it is a performer manifold the headers i couldn't tell what size. The pipes are 2 1/4. I think the engine was a 1975 390 (bought it of this guy for a 100 bucks fully rebuilt) cam don't know if it is stock or not
So if my horse power is that low what can i do to get it up around 325 hp?
1972 250 6.4L(390 FE.) (edelbrock intake manifold-edelbrock 600 cfm carb-headers-dual pipes cherry bomb mufflers-engine bored 30 over)