416ci LS stroker long block with Mast Motorsport cylinder heads on the stand at Sam's Performance, built ready for a Harrop 2650 blower

Engine build · June 2023

416ci stroker with Mast Motorsport heads

Inside an SP Built engine: a 416ci LS stroker with Mast Motorsport heads, a Callies Dragonslayer crank and Diamond pistons, built ready for a Harrop 2650 supercharger.

This is the part most people never see. A 416 cubic inch stroker on the stand in our workshop, built with a Callies Dragonslayer crankshaft, Diamond pistons and Mast Motorsport cylinder heads.

Once complete it was ready for a Harrop 2650 supercharger. It is the same care that goes into every SP Built engine.

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