Your choice of a seasoned GM 4 bolt main block with 1 piece rear main seal or a new block with 1 piece or 2 piece rear main seal.
Stress relieved 4 bolt main block is completely CNC machined in our state of the art CNC machining center. The block is fully align honed and torque plate honed, then assembled with brass frost plugs and pressure tested.
Short Block Features
• Seasoned remanufactured Tri Star HP cast crankshaft
• Seasoned remanufactured Tri Star HP connecting rods with ARP rod bolts
• Hypereutectic pistons
• Moly rings
• Clevite main and rod bearings
Camshaft Advertised Duration
Camshaft Duration @ .050"
Additional Parts Included