Chevy LS 6.0L Gen IV B-4.000 M-STD DH-9.240 6-Bolt Billet Main Iron Engine Block to maintain accurate valvetrain adjustment

to maintain accurate valvetrain adjustment

That latter characteristic translates into increased ground

Aluminum also promotes faster heat dissipation for further cooling of your transmission

slotted brake rotors

look no further than PCE

Chevy LS 6.0L Gen IV B-4.000 M-STD DH-9.240 6-Bolt Billet Main Iron Engine Block to maintain accurate valvetrain adjustmentThe next level of performance are these cast iron Chevy LS blocks. Designed to look standard under your bonnet, and work with stock components. The Speedmaster block is ready for the street racer or all out racer with added strength and cubic inches. All the factory flaws redesigned to be eliminated, while still using the water jacket design. The Speedmaster blocks are cast from high density iron with extra thick cylinder walls and decks.