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Featuring low compression ratio, the ATK Chevy LS3 415 Short Block is ideal for applications that run on small shot of nitrous. It features aluminum engine block for lightweight construction, while the forged steel crankshaft and connecting rods give enough strength to withstand wear. This short block is assembled with sealed freeze plugs and oil galley plugs for trouble-free operation.
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!