Whether you like the strength of traditional cast iron or the weight savings of aluminium, Speedmaster makes a bare engine block that will give you a strong foundation for engines making 1,000, 1,500, or even 2,000-plus horsepower.
Cast from A356-T6 aluminum Speedmaster’s aluminium blocks will save you a bunch of weight over a standard cast iron block. They have features like 4-bolt billet steel main caps, a priority-main wet sump oiling system, and extra-thick decks for a reliable head gasket seal.
Blocks for Chevy 350
• Rated to handle 1,000-plus horsepower
• Standard 9.025″ deck height allows the use of off the shelf parts
• Provisions for dry sump oiling system
• Choice of 4.00″ or 4.125″ bore size
Block for Chevy 454
• Rated to handle 2,000-plus horsepower
• 4.50″ bores, 4.60″ maximum overbore
• Enlarged bosses for offset or oversize lifters
• Provisions for dry sump oiling system
Block for Ford 351W
• Rated to handle 1,500-plus horsepower
• 4.00″ bores with ductile iron sleeves, 4.125″ maximum overbore
• Uses 351C main bearings
• Enlarged bosses for offset or oversize lifters
• Provisions for SVO-style dry sump oiling system
Start your big-horsepower small block Chevy, big block Chevy, Ford 351W, or 5.7L Gen III Hemi with a fresh Speedmaster cast iron block. You’ll save time and money compared to reworking a factory block that still won’t be as strong as a Speedmaster block.
Blocks for Small Chevy
• Rated to handle 1,500-plus horsepower
• 4-bolt billet steel main caps
• Standard 9.025″ deck height allows the use of off the shelf parts
• Priority main oiling system directs oil to main bearings
• Provisions for dry sump oiling system
• Choice of 4.00″ or 4.125″ bore sizes
• Choice of Chevy 350 (2.649″) or 400 (2.849″) main bearing bore sizes
Block for Chevy 454
• Rated to handle 1,500-plus horsepower
• 4-bolt billet steel main caps
• 4.60″ bores, 4.625″ maximum overbore
• Enlarged bosses for offset or oversize lifters
• Set up for priority-main wet sump oiling system, has provisions for dry sump oiling system
Block for Ford 351W
• Rated to handle 1,500-plus horsepower
• 4.00″ bores, 4.185″ maximum overbore
• 4-bolt billet steel main caps
• Uses 351C main bearings
• Enlarged bosses for offset or oversize lifters
• Can use wet sump or SVO-style dry sump oiling system
Block for 5.7L Gen III Hemi
• 2003-2008 style block with no provisions for VVT
• 3.917″ finished bores, 4.100″ maximum overbore
• 2-bolt billet steel main caps
• Cam bearings included
Summit Racing Equipment
www.summitracing.com
1-800-230-3030