When I was drag racing my 66 cuda and now with my 65 formula s both 318 engines I utilize regular 318 exhaust manifolds with dual exhaust set up. 1.5 inch pipes with good flowing, not too loud mufflers. Reality is unless you are bulding a motor that goes super fast you do not need headers! I went through this when drag racing and building motor for the 66 cuda. I was running in the 12's over 100 mph in 1/4 mile with simple dual exhaust and had room for even quicker times as the car was getting improved! As you do head work the car will put out the exhaust very well through the regular set up and one can smooth them out to get better flow also! Fitting headers into an early abody is not easy or simple without cutting up body or making a mess so why do it when you do not really need it! Keep it simple and you will run good and look good and also fool people as to hoe fast the car really is!!! I love to pull up to a mustang and blow its doors off!!!! Morar or No Car!!! LOL
65Cudalover!
