Katech Performance has announced its "Air Attack" LS7 SC (Supercharged) crate engine is available for owners of hot rods, off-road vehicles and show cars.
The 427 cubic-inch displacement (4.125-inch bore; 4.000-inch stroke) engine produces up to 750 horsepower and 700 ft.-lbs. of massive stump-pulling, flat-lined torque. Katech lays a solid foundation with Callies forged steel crankshaft and connecting rods plus the manufacturer's forged aluminum pistons with DLC (Diamond-Like Carbon) coated pins. They use a stock LS7 block with a billet steel girdle to tie the bottom end together.
"Our Air Attack LS7 SC delivers extreme forced-induction performance for the LS7 engine in off-road and hot-rodding applications," said Caleb Newman, vice president, director aftermarket operations, Katech Performance. "Because we are producing 50 percent more power - far beyond what the cast production piston was designed for - our Katech forged pistons were a must in the Air Attack LS7 SC to maintain engine life and enable even greater boost levels."
An upgraded camshaft designed for boost actuates the stock LS7 titanium intake valve and sodium-filled exhaust valves. Magnuson handles the compression of the air change with their M122 twin-screw high-helix intercooled supercharger. In addition to the standard features, optional Katech valve covers and TVS-based superchargers are also available.
The engine is one of five that make up Katech Performance's LS7 "Arsenal" that includes a "Street Attack" LS7 7.0L, "Sneak Attack" LS7 5.7L, "Desert Attack" LS7 7.0L and "Track Attack" LS7 7.0L option. Each engine is completely disassembled, blueprinted and enhanced by the same technicians that produce championship winning engines for all Katech race programs.
Since 1977, Katech has captured more than 50 driver's and manufacturer's championships competing in the world's most prestigious racing leagues, including the SCCA SPEED World Challenge, American Speed Association (ASA), International Motor Sports Association (IMSA), American Le Mans Series (ALMS) and NASCAR(r).
For more information or to request a catalog, call 866-KATECH1 or visit Katech Performance online at www.katechengines.com.
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