Chevrolet Performance LS 376/525 LS3 Long Block Crate Engines 19434642

Looking for a late model LS engine that has a little thump from the camshaft? This 525 hp LS3 with the aggressive ASA performance cam will fill the bill. With a tight lobe separation of 110-degrees and 0.525 in. of lift on both the intake and exhaust—along with 226-degree duration on the intake and 236-degree duration on the exhaust measured at 0.050 in.—this cam produces superior throttle response and great top end power. Chevrolet Performance also offers a complete ECM/Wiring Harness Kit programmed and calibrated to match this camshaft for proven drivability and performance. The 525 hp LS3 is the perfect crate engine for those desiring a “bumpy” camshaft idle for a drop-in package.

Chevrolet Performance LS 376/525 LS3 long block crate engine specs and notes:

* Crate engine does NOT include the ECM controller kit
* Requires Premium 93-Octane fuel
* Uses the Chevrolet SS oil pan assembly
* Not intended for marine usage
* Developed by GM for pre-1976 street vehicle engine swaps
* Engine family: LS Gen 4
* Torque: 486 lbs.-ft. at 5,200 rpm
* Horsepower: 525 hp at 6,200 rpm
* Compression ratio: 10.7:1
* Block: Cast aluminum with 6-bolt, cross-bolted main caps, 4.065 in. bore
* Crankshaft: Nodular iron, 3.622 in.
* Heads: Aluminum LS3 rectangular port, 68cc chambers
* Valves: 2.165 in. / 1.590 in.
* Camshaft lift: 0.525 in. / 0.525 in. hydraulic roller
* Duration at 0.050 in.: 226-degrees / 236-degrees
* Engine type: Deluxe Crate Engine Assemblies
* Engine size: 376 cu. in. / 6.2L
* Intake fuel delivery: Factory LS MPI