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Designed to support high-performance engine, the ATK Chevy LS3 415 Short Block can withstand up to 700 horsepower. It is built over GM aluminum blocks for lightweight yet durable use, while the forged internal components like crankshaft, connecting rods and pistons offer exceptional durability.
Every great build needs a solid foundation! For that reason, we take the hard work out of the picture by selling short blocks that are ready for you to complete yourself. Our GM Short Blocks are most commonly packaged as the engine block assembled with Pistons, Piston Rings and Crankshaft installed.
ATK specializes in muscle. With the highest quality internal parts and Dyno Proven combinations of every engine built, ATK is able to add the most bang for your buck and back it up with an industry leading warranty.
Don't forget the engine paint!
To get $10 OFF your order!