Hooker BlackHeart Cast Iron Exhaust Manifold - 2-1/2 in Outlet - GM LS-Series (Pair) 80207RK better mileage and decreased oil

better mileage and decreased oil change frequency

and many more devises with a 3

On / Off / On

Also included is a built-in seal for a leak-free installation

Hooker BlackHeart Cast Iron Exhaust Manifold - 2-1/2 in Outlet - GM LS-Series (Pair) 80207RK better mileage and decreased oilFor applications or projects where our standard LS swap manifolds (8501HKR, 8502HKR, 8503HKR series) don't quite fit and our "center dump" manifold (8504HKR) exits too far forward, our new rear dump and rear dump SBC exit cast iron swap manifolds have arrived. These differ in that they exit in a straight down fashion much like a block hugger header but exit more toward the rear of the engine than our "center dump" manifolds. While almost the same as