New Chevy LS3 Dirt Late Model Engine

This 6.2L engine is similar to the LS3 V-8 that is standard in the Chevrolet Corvette, adapted to super late model racing with a carburetor intake manifold, 6-quart racing oil pan, and more.

Rate by GM at 525HP - our dyno tests the engines set up for dirt racing at 630HP.

The engine is lightweight and strong, using an aluminum block with cross-bolted 6-bolt main caps and high-flow LS3 rectangular-port cylinder heads.

The CT525 comes with coil-near-plug ignition, a water pump, exhaust manifolds, and SFI Certified balancer.

Balanced: Internal
Block Type: Cast-aluminum with 6-bolt,
cross-bolted main caps
Bore x stroke (in)4.065 x 3.62 (103.25 x 92mm)
Camshaft duration (@.050 in)226 degree intake / 236 degree exhaust
Camshaft lift (in): .525 intake / .525 exhaust
Camshaft type: Hydraulic roller
Compression ratio: 10.7:1
Connecting rods Type: Powdered metal
Crankshaft Type: Nodular iron
Cylinder head Type: LS3 rectangle port; aluminum as-cast with 68cc chambers
Displacement (cu in): 376 cu in (6.2L)
Engine Name: Circle Track 525/525:
Engine type: LS Series Gen IV Small-Block V-8
Maximum rpm: 6700
Pistons Type: Hypereutectic aluminum
Recommended fuel: 92 octane
Reluctor Wheel: 58X
Rocker arm ratio: 1.7:1
Rocker arms Type: Investment-cast, roller trunnion
Valve size (in): 2.165 intake / 1.59 exhaust

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