7186 Edelbrock Performer RPM manifold
Those factory cast iron 4 bbl square bore 383 manifolds were cranking out 325 horsepower in 1967 out of their 10:1 compression engines of the day.
Like the stock 340 cast iron manifolds, they still perform well.
Have pickup up those stock manifolds for a 100 bucks a piece, the big block ones somtimes even less when people just have them sitting around collecting dust.
Those factory cast iron 4 bbl square bore 383 manifolds were cranking out 325 horsepower in 1967 out of their 10:1 compression engines of the day.
Like the stock 340 cast iron manifolds, they still perform well.
Have pickup up those stock manifolds for a 100 bucks a piece, the big block ones somtimes even less when people just have them sitting around collecting dust.
