440 HP manifolds vs. headers
The passenger side can be stock, the driver side used this type of manifold for an A-body. I have a used one in my shed but here is a pic of a clean one. It supposedly dropped the horsepower from 375 to 335 on a stock motor.
The passenger side can be stock, the driver side used this type of manifold for an A-body. I have a used one in my shed but here is a pic of a clean one. It supposedly dropped the horsepower from 375 to 335 on a stock motor.