GM Performance Parts Short Blocks
Wanting to build your own custom engine? Do you already have some parts and don’t require a complete engine? Start fresh with a new short block form the General. They use all new components, and are fully assembled - less camshaft and accessories (unless noted).

     
Part #
Manufacturer
Product Name
Price
12556121
GM Factory Replacement Parts
350 / L31 4-Bolt Main 350 Short Block Assembly
12556121BP
GM Performance Parts
L31 350 SB Chevrolet Balanced & Blueprinted Short Block
$2,159.95
12499106
GM Performance Parts
383ci Short Block Engine Assembly
$3,600.00