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The ATK Chevy LS3 415 Short Block is built for higher compression application and can handle up to 700 horsepower. It features GM aluminum block for lightweight durability, and the forged crankshaft, connecting rods and forged pistons offer exceptional sturdiness. This short block has installed and sealed freeze plugs and oil galley plugs to prevent leaks.
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!