Stage 3 5.7 LS1 346 / 383 Short Block Stage 3 5.7 LS1 346/383 Short Block Blueprinted GM block L33 core King racing main bearings King racing rod bearings Thompson Motorsports single piece racing cam bearings K1 forged crankshaft with reluctor 3.622" or 4.000" K1 4340... Quick view SKU: TMS-LS1SBSTG3 Previous 1 2