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CT525 CRATE ENGINE

Enhanced with Forged Pistons
and upgraded rod bolts

CT525 CRATE ENGINE

Enhanced with Forged Pistons
and upgraded rod bolts

Sealed Crate Engine Communication

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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

Based on the 6.2L LS3, the CT525 is a deep-breathing high-level champ upgraded with forged aluminum pistons and upgraded rod bolts for serious racing. It is based on the LS engine family and delivers serious power for serious racers, including Super Late Model and Modifiers.

PART NO. 19434598

WhyBuy

533 HP @6600 RPM

WhyBuy

477 LB-FT @5200 RPM

Running strong

The CT525 sealed crate engine 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, upgraded rod bolts, 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.

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: 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

Win with Integrity

Reject knockoff crate engines and choose a sure shot of adrenaline from Chevrolet Performance, a 20-year supporter and long-standing sponsor of grassroots racing nationwide.

CHEVROLET PERFORMANCE CIRCLE TRACK CRATE ENGINE

  • Features all-new GM OE parts
  • Factory-sealed for fair competition
  • Dyno tested for a minimum of 50 hours with 45 hours at wide-open-throttle (WOT)

COPIES OF THE CHEVROLET PERFORMANCE CIRCLE TRACK CRATE ENGINE

Imitations of the real CT350, CT400, and CT525 engines that are not designed, engineered, tested, and built by Chevrolet Performance.

Win with Integrity

Reject unproven knockoff crate engines and choose a sure shot of adrenaline from Chevrolet Performance, proud sponsor and 20-year supporter of grassroots racing nationwide.

CHEVROLET PERFORMANCE CIRCLE TRACK CRATE ENGINE

 

  • Features all-new GM OE parts
  • Factory-sealed for fair competition
  • Dyno tested for a minimum of 50 hours with 45 hours at wide-open-throttle (WOT)

 

COPIES OF THE CHEVROLET PERFORMANCE CIRCLE TRACK CRATE ENGINE

 

Imitations of the real CT350, CT400, and CT525 engines that are not designed, engineered, tested, and built by Chevrolet Performance. 

 

Learn More

Mobil 1 is now The Official Motor Oil of Chevrolet Performance.

VISIT OUR BRANDS FOR YOUR OE NEEDS

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.