Exhaust Manifolds

CFD244 said

IIRC, I don't think the chrome boxes are happy running at lower RPM for extended periods of time.

Click to expand...

I've been running the same chrome box since the late 70's on a street car, absolutely no problems. Except for a few years when I tried a MSD 5c box, that slowly went away. Then back to the tried and true chrome box.