GM RLB LS3 ENGINE

Chevrolet Performance 525 RLB 6.2L Sealed Race Long Block

The Chevrolet Performance 525 RLB is a factory-assembled and sealed 6.2-litre LS race long block developed for competition applications. Based on the Gen IV LS engine platform, it combines an aluminium six-bolt block with LS3 rectangular-port cylinder heads, forged aluminium pistons and powder-metal connecting rods with ARP bolts.

When tested by Chevrolet Performance with the specified four-barrel induction system, the combination produces 533 hp at 6,600 rpm and 477 lb-ft of torque at 5,200 rpm.

The assembly includes ignition coils, spark plugs, leads, an SFI-certified harmonic balancer and a six-quart racing oil pan. Induction, ignition control, fuel delivery, starter, exhaust, water pump and front accessory drive components are required separately. Intended for competition use only.

Specifications:

• Brand: Chevrolet Performance
• Engine Type: Gen IV LS-Series small-block V8
• Displacement: 376 cu in / 6.2 litres
• Power: 533 hp at 6,600 rpm
• Torque: 477 lb-ft at 5,200 rpm
• Maximum Recommended Engine Speed: 6,700 rpm
• Bore x Stroke: 4.065" x 3.620" / 103.25 x 92 mm
• Compression Ratio: 10.7:1 nominal
• Block: Cast aluminium with six-bolt cross-bolted main caps
• Cylinder Heads: Aluminium LS3 rectangular-port, 68 cc chambers
• Crankshaft: Nodular iron
• Connecting Rods: Powder metal with ARP bolts
• Pistons: Forged aluminium
• Camshaft: Hydraulic roller
• Valve Lift: 0.525" intake / 0.525" exhaust
• Reluctor Wheel: 58x
• Engine Balance: Internal
• Recommended Fuel: Premium pump fuel
• Oil Pan Capacity: Six US quarts
• Factory Anti-Tampering Seals: Fitted
• Intended Use: Competition only
• SKU: 19435005