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LS3 6.2L Forged Long Block Engine CT525 376CID 533HP (Unassembled) by Chevrolet Performance 19434743

19434743

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The Power and Strength of Our LS Racing Engine in a Long Block!

Chevrolet Performance’s 525 RLB is based on the LS engine family and is like the 6.2L CT525 but sold as a sealed long block for universal racing sanctioning bodies.

The high-revving 525 RLB crate engine is assembled with strong forged pistons and heavy-duty connecting rod bolts designed to support its performance capability and enhance its durability. With its deep-breathing LS3 rectangular-port cylinder heads, it is a combination rated at 533 horsepower at 6,600 rpm and a strong 477 lb.-ft. of torque at 5,200 rpm, when used with a 4-barrel carburetor and intake manifold, per Chevrolet Performance testing.

The engine assembly comes with coil-on-plug ignition and an SFI-certified balancer, along with a 6-quart racing oil pan and more. All that’s needed to complete the assembly is an induction and ignition system — and all those components are also available from Chevrolet Performance.

    INSTALLATION NOTES:
  • Requires addition of induction and ignition control system, starter, fuel system, exhaust system, and front accessory drive system.
  • The 6-quart racing oil pan is designed to clear most GM rear-steer chassis with stock engine location.
  • The long block is designed for universal racing-sanctioning bodies. It is not intended for street use.
  • The 525RLB does not include water pump, intake manifold, or factory exhaust manifolds.
  • Chevrolet Performance Racing Long Block engines include factory-installed anti-tampering seals.
    Specifications:
  • Power: 533 HP @ 6600 RPM, 477 ft. lbs. of torque @ 5200 RPM
  • Displacement: 376 CID, 6.2L
  • Bore x Stroke: 4.060” x 3.620”
  • Compression Ratio: 10.7:1
  • Recommended Fuel: 92 Octane
  • Block: Cast Aluminum with 6 bolt cross-bolted main caps.
  • Crankshaft: Nodular Iron
  • Connecting Rods: Powdered Metal Steel
  • Pistons: Forged Aluminum
  • Camshaft: Steel Hydraulic Roller Tappet
  • Cam Lift: .525” Intake / .525” exhaust
  • Cam Duration @ .050”: 226 deg. Intake / 236 deg. Exhaust
  • Lobe Separation: 110 Degree
  • Cylinder Heads: Aluminum LS3 style rectangular ports.
  • Combustion Chamber: 68cc
  • Valves: 2.165” Intake/ 1.590” Exhaust
  • Rocker Arms: Cast Roller Trunnion, 1.7:1 Ratio
  • Balance: Internal
  • Reluctor: 58X
  • Maximum GM Recommended RPM: 6700
    Engine Includes:
  • Fully GM assembled long block
  • Ignition Coils, Plug Wires and Spark Plugs
  • Oil pump, pick-up and 6-quart oil pan
  • SFI Certified Harmonic Balancer
  • Front timing cover

NOTE: Does NOT include oil pump pick-up tube, oil pan, spark plugs, or racing seal bolts.

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Pricing: $10,081.00

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