Message: From everything I've read on here headers are a waste for the 4.7. However, upon browsing the kenne-bell site (only if a supercharger was as cheap as headers...) I noticed that "4-tube" headers produced 12 rear-wheel dyno tested horsepower. My question is, anybody know what headers these are and was there test vehicle one with the pre-cats?
Subject: 4-tube headers for the 4.7?
RE: 4-tube headers for the 4.7?