Build your dream engine The next level of performance is these aluminum Chevy Big blocks. Block is ready for the street racer or all out racer with added strength and cubic inches. All the factory flaws redesigned to eliminate all problems, still using the original water jacket design. Blocks are cast from highest quality aluminum with extra-thick cylinder sleeves and decks. The blocks webs are stronger and fitted with billet steel 4-bolt billet main caps.
Ideal for sprint cars, modifieds, late model stock cars, dragsters, unlimited open competition classes, supercharged, turbocharged and nitrous applications! Features Include: Ductile iron sleeves and extra thick cylinder walls & decks, 4 bolt splayed mains, enlarged bosses for offset or oversize lifters and scalloped water jacket holes for improved cooling. Siamesed cylinders, dual starter mount bolt patterns for additional starter clearance. Front and rear external oil inlets, crossover and restrictor provisions to simplify plumbing with external pump. Screw in freeze plugs. Used in 2000+HP Applications!
Speedmaster has become a leader in its field, built on a long term consistency of being a specialist in aftermarket automotive components. The team has shared all the finest moments in the numerous accolades for its people, its products, and its approach. Speedmaster is also one of the rare companies to produce its own products, where majority items are entirely developed and manufactured in its workshops. The ultimate token of precision, Speedmaster is the world’s only major parts manufacturer to equip cars from Standard replacement to Top Fuel Dragsters.
In 1979, the company was founded with Pete’s Performance, which was a small speed workshop. It began by building engines for customers as a hobby, and it has now grown to include selling, assembling, manufacturing and racing high performance engine parts. Over the years, the company has grown into a worldwide high performance powerhouse. Growing from a one-man bricks-and-mortar business; to now a supply chain in which en