HIGH-RPM PERFORMANCE WITH NEW FORGED PISTONS!

Chevrolet Performance’s deep-breathing, high-revving CT525 6.2L crate engine is upgraded with forged pistons designed to support its performance and enhance its durability.

The CT525 is based on the LS engine family and is similar to the 6.2L LS3, but we’ve adapted it to circle track racing with a carbureted intake manifold, 6-quart racing oil pan and more. 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. This combination is rated 533 hp at 6,600 rpm and a hefty 477 lb.-ft. of torque at 5,200 rpm, per Chevrolet Performance testing.

The CT525 6.2L comes with coil-on-plug ignition and an SFI-certified balancer. All that’s needed to complete the assembly is a carburetor, starter and our LS/LSX ignition controller (P/N 19355863)—all available from Chevrolet Performance.

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CT525 Tech Specs

• Part Number: 19434598
• Engine Type: LS-Series Gen-IV Small-Block V-8
• Displacement (cu. in.): 376 (6.2L)
• Bore x Stroke (in.): 4.065 x 3.62 (103.25 x 92mm)
• Block (P/N 12673475): Cast-aluminum with six-bolt, cross-bolted main caps
• Crankshaft (P/N 12597569): Nodular iron
• Connecting Rods (P/N 12649190): Powdered metal
• Pistons (P/N 19418214): Forged aluminum
• Camshaft Type (P/N 88958770): Hydraulic roller
• Valve Lift (in.): .525 intake / .525 exhaust
• Camshaft Duration (@.050 in.): 226° intake / 236° exhaust
• Cylinder Heads (P/N 12629063): LS3 rectangle port; aluminum “as-cast” with 68-cc chambers
• Valve Size (in.): 2.165 intake / 1.590 exhaust
• Compression Ratio: 10.7:1
• Rocker Arms (P/N 12669995): Investment-cast, roller trunnion
• Rocker Arms (P/N 12681275 exh): Investment-cast, roller trunnion
• Rocker Arm Ratio: 1.7:1
• Recommended Fuel: Premium pump
• Maximum Recommended rpm: 6700
• Reluctor Wheel: 58X
• Balanced: Internal