Engine - GM Performance Short Block Engines - SB2/SB2.2 Bare Block

From GM Performance - This CNC machined bare block uses bow tie casting P/N 10051184 and is machined identically to block P/N 24502503 except the lifter bore locations have been revised o match the SB2 or SB2.2 cylinder head. Technical Notes: Production blocks can be used if offset roller rockers and roller tappets are used. Must use special camshaft when using SB2 or SB2.2 cylinder heads.