Chevy GM LS Inline Billet Aluminum Thermostat Housing Neck with O-Ring Stay on track with Speedmaster

Stay on track with Speedmaster 9 in

They distribute the ever-increasing valve spring loads over the retainer better than typical 7 degree locks by reducing the chance of "pull-through" failure

The impeller and cavity have been custom CAD designed and engineered to be larger and more efficient to provide flow that is 40 percent greater than stock pump

These Speedmaster camshaft bearings are made to meet or exceed OEM parts when it comes to strength and durability

Chevy GM LS Inline Billet Aluminum Thermostat Housing Neck with O-Ring Stay on track with SpeedmasterDesigned for LS applications or water pumps with threaded provision for water neck.