Bolt on LS bearing support hub. This hub is made from billet steel and is designed to allow the racer to have a crankshaft bearing support off the front of their blown LS engine. Hub has a 1/2" hex on front to turn the engine over to adjust valves or check rod bearings. Mandrel bolts to the crank hub in front of the blower pulley and has a machined surface on the front O.d. to pick up the bearing in the bearing support on the front of the engine.
This hub also can be used to help the racer build a support for their engine such as a Pontiac or Ford where sometimes a manufactured crank support is not available off the shelf.
From blower pulley surface to where the bearing rides is 2.875", end to end 3.725", register in mandrel is 2.00" to fit over the end of the crank hub using six 3/8" bolts on a 2.782" bolt circle. Hub has been scalloped machined to reduce rotating weight.