Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext 2 SFI Approved and will

2 SFI Approved and will withstand the extreme power and rpm of your performance application

they come in three different finishes and feature a billet aluminum oil fill cap

They are made of aluminum and feature a natural finish

the LS-series heads are produced using our "Gravity Casting" process

These Speedmaster cast crankshafts are perfect for mildly built street engines or just to replace stock crankshafts that have seen better days

Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext 2 SFI Approved and willThese Speedmaster cast crankshafts are perfect for mildly built street engines or just to replace stock crankshafts that have seen better days. These Speedmaster crankshafts are precision ground and micro polished to exacting tolerances.