LS 408 SHRT BLK DISH 24T

The ATK SP37-G4-B is an LS 408CI Stroker Short Block designed for high-performance applications, including boost and nitrous setups. It is built with a seasoned 6.0L Iron Gen IV block and features ARP main studs. This short block includes a Manley 4340 forged 24-tooth reluctor wheel crankshaft, Manley 4340 forged H-beam 6.125” connecting rods with ARP 2000 bolts, and Manley 2618 forged -10cc dished moly skirt coated pistons. The Total Seal CS AP rings with steel top rings are gapped for boost/nitrous applications. Compression ratios vary depending on cylinder head volume: 11.2:1 with 64cc, 10.7:1 with 68cc, and 10.3:1 with 72cc.