Big Block Chevy Jet Kit with Aluminum Riser
These manifolds have individual primaries for more torque and horsepower over your stock center rise or log style exhaust manifolds. This is a great choice as an upgrade from log style manifolds. These manifolds have a steep down slope originally designed for jet boat applications. They are also available with a stainless steel riser. 19-1/4" high from crankshaft centerline, 32-1/2" wide on stock heads.