Fisher
Old Guy with a Cool car.
Tried the search but it isnt working? Any way, i am building a 400 hp 340 with 1-5/8 headers. Will a 2-1/2" X pipe system be sufficient for this application? Going to dump it at the rear axle, no tailpipes.
Why 7000rpm a 340 should make 400hp around 5800rpms?