The phenomenal LS3 is by far one of the most popular engines going into muscle cars today. Pumping out an impressive 430 horsepower and 425-ft/lbs. of torque, it is easy to see why this is one of GM's best performing and versatile engines. Featuring an aluminum block, cylinder heads and composite intake manifold, this LS3 crate engine comes complete from oil pan to ignition system. Also included is the throttle body, exhaust manifolds, water pump, balancer, 58 tooth reluctor wheel and 14-inch automatic transmission flexplate. All of this means you have modern dependability and fuel economy along with tire shredding horsepower and torque.
TECHNICAL INFORMATION: Torque: 425-ft/lbs. @ 4600 rpm Maximum rpm: 6600 rpm Compression ratio: 10.7:1 Block: 12623967 cast-aluminum six-bolt with cross-bolted main caps Crankshaft: 12597569 nodular iron Connecting Rods: 12607475 powdered metal steel Pistons: 19207287 hypereutectic aluminum Camshaft: 12603844 hydraulic roller, .551"/.522" lift, 204/211 degrees duration @ 0.050 Cylinder heads: 12629063 aluminum L92-style port 68cc chambers Intake valves: 2.165" Exhaust valves: 1.590" Recommended fuel: 92 octane Rocker arms: 12569167 intake, 10214664 exhaust Rocker arm ratio: 1.7:1.
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