Fits '70-'99 chassis with alternator-style primary. S&S Super E carburetor. S&S hydraulic valve train and roller rockers. S&S electronic ignition. Includes oil filter mount for generator location. 3-5/8" bore x 4-1/2" stroke. 8.5:1 compression ratio. Natural crankcase with black powder-coat cylinders. Made in the U.S.A..
