100% Satisfaction Guarantee Since 1978
We stand behind our solutions and customers.
Assembled for high compression application, this ATK Chevy LS3 415 Short Block can hold up to 700 horsepower. It boasts GM LS aluminum blocks for lightweight durability, while the forged 4340 steel, forged aluminum piston, and forged 4340 steel connecting rod ensure rock-solid performance.
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!