Thread: Exhaust manifolds

Tweet

Good thread – Common thought used to be that cast iron manifolds will give you a quieter engine with increased torque in the midrange RPM typically associated with street use and that headers were noisier, but certainly improve breathing at the higher RPM associated with performance and race application.

I personally like the sound of headers but have factory Corvette cast iron manifolds on my ’63 Nova running a slightly modified small block. The most desirable cast iron (factory) for SBC are the 2 ½" ram horn manifolds found on the 60's Corvettes. Good looks and good sound.

Recent article in Mopar Muscle Magazine gives some great info on crate motors with various manifold/headers. Not exact comparison with SBC, but should be close and it's a great article.

http://www.moparmusclemagazine.com/t...t/headers.html