CT525

PARTS INTENDED FOR COMPETITION USE ONLY.
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PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

PROPOSITION 65 WARNING.
Click for more details.

PROPOSITION 65 WARNING.
Click for more details.

High RPM Performance With New Forged Pistons

The deep-breathing, high-revving CT525 6.2L crate engine is upgraded with forged aluminum pistons designed to support its performance and enhance its durability. It is based on the LS engine family and delivers serious power for serious racing series, including Super Late Model and Modifieds.

PART NO. 19418211

WhyBuy

533 HP @6600 RPM

WhyBuy

477 LB-FT @5200 RPM

Running strong

The CT525 is based on the 6.2L LS3, but we’ve adapted it to circle track racing with a carbureted intake manifold, a high-lift roller camshaft, 6-quart racing oil pan and more.

Installation Guides

Find everything from vital data about your engine’s capabilities to how to install it into your build.

CT525 Tech Specs

  • Part Number: 19418211
  • 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

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details.