Chevy LS 6.0L Gen IV B-4.000 M-STD DH-9.240 6-Bolt Billet Main Iron Engine Block These coils feature advanced bobbin

These coils feature advanced bobbin technology

A billet yoke can mean the difference between winning and losing

They are for small and big block Chevys

Speedmaster CNC ported cylinder heads are machined on dedicated 5-axis CNC machines to ensure accuracy and better flow

filter element

Chevy LS 6.0L Gen IV B-4.000 M-STD DH-9.240 6-Bolt Billet Main Iron Engine Block These coils feature advanced bobbinThe 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.