Pay in 4 interest-free payments of $233.12 Learn more
Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
They just reuse the old
Nitrous/injector bosses
Speedmaster has already done the work for you
Speedmaster CNC ported cylinder heads are machined on dedicated 5-axis CNC machines to ensure accuracy and better flow
Their durable finish cleans up easily to provide lasting good looks under your hood
Chevy LS 6.0L Gen IV B-4.000 M-STD DH-9.240 6-Bolt Billet Main Iron Engine Block They just reuse the oldThe 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.
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