Originally Posted By cudabill
Certain cars don't gain much from headers. I wasn't sure if that was the case with Chrysler BB motors. I can't feel any gain under 10%, and the gains I see are may 20-30hp.

That being said, I'll rebuild the 383 as a stroker and put heads and cam on it with a 500hp goal. Deep breathing engines should benefit more from headers.

I did find a blog on header brands on Moparts: http://www.moparts.org/Tech/Archive/exhaust/17.html


You WILL be far better off with headers on it.. MOST of
the manifolds are a choke point except a couple of
manifolds and they tend to be the race type
wave