Previously equipped in vehicles like the 2014 Chevrolet Camaro Z/28 and C6-generation Chevrolet Corvette Z06, the naturally aspirated 7.0L V8 LS7 is well-known for its big output numbers and smooth power delivery. Now, Chevrolet Performance has unveiled the new-and-improved LS7-based LS427/570 crate motor with even more performance on tap.
Chevrolet Performance frames the new crate motor as “an enhanced version of the production-based LS7 7.0L engine that offers more horsepower, more torque and, thanks to a simpler wet-sump oiling system, easier installation.”
Output from the new atmospheric ‘eight is rated at 570 horsepower and 540 pound-feet of torque. For those of you keeping score at home, that’s an increase of 65 horsepower and 70 pound-feet of torque compared to the standard production engine, making the LS427/570 the most powerful naturally aspirated LS crate engine on offer.
The new crate motor also gets a new wet-sump oiling system, which means it doesn’t need a separate oil tank, lines, or any of the supporting components from the standard LS7 dry-sump system.
According to Chevrolet Performance, standout features include a new high-lift camshaft that was developed specifically for this particular application, as well as titanium intake valves and sodium-filled exhaust valves. The connecting rods are also made from titanium, while the crankshaft is forged steel. The cylinder heads were CNC-ported as well.
Final touches include a low-profile LS7 EDI intake manifold, fifth-generation Camaro Z/28 exhaust manifolds, and a 14-inch Camaro Z/28 manual transmission flywheel.
Chevrolet Performance says the engine requires the LS427/570 Engine Controller P/N 19420000, which is sold separately. Mobil 1 15W50 fully synthetic motor oil is recommended.
The new 570-horsepower crate motor is available to oder now through Chevrolet Performance dealers and retailers. We should also mention that this engine is designed exclusively for competition vehicles, and is not intended for use on public streets or highways.