This is a brand new Raw cast iron exhaust manifolds that have been designed to hug close to the engine block so they fit into a wide variety of replacement and engine–swap applications. Their contoured design aims the exhaust directly at the exit port for improved flow. These cast iron manifolds will provide leak–free performance with less under hood noise than traditional headers. Plus, their shorty design means you can route exhaust tubing close to your frame/floor pan for maximum ground clearance. When you pick these up for the first time, you will feel how truly heavy duty and well built these headers are. A top quality upgrade for your LS application. We have had good feedback so far for fitment on 1970-81 GM F-bodies, 82-88 GM G-bodies and 68-72 GM A-bodies with the LS engines. Thes.
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