Chevy LS2 4.125" 416ci Forged Rotating Assembly Kit [4.000] They are manufactured from quality

They are manufactured from quality materials

Speedmaster water pumps have a bigger impeller and larger cavity size to flow 40 percent more coolant than stock

Complete engine sealing with Speedmaster exhaust gaskets

PCEs stainless steel blower pulley bolt are polished to match the rest of high luster finish on your Speedmaster blower kit

They are for small and big block Chevys

Chevy LS2 4.125" 416ci Forged Rotating Assembly Kit [4.000] They are manufactured from qualitySpeedmaster Chevy LS2 rotating assembly featuring a precision ground forged 4340 steel crankshaft, 4340 chromoly H beam connecting rods, and forged flat top pistons matched to your bore size.