Chevrolet Performance CT525 6.2L Crate Engine


  • 533 hp @ 6,600 rpm/477 lb.-ft. @ 5,200 rpm
  • Lightweight, High-RPM LS Power!
  • Forged Pistons
  • For Circle Track Racing only – NOT intended for street use
  • Comes with GM anti-tamper fasteners installed

Have your engine dyno tested by one of our professional engine builders to ensure everything is properly broken in. We can dyno your engine with your components to make sure everything is working harmoniously before shipping you the whole assembly drained and ready to install.

Shipping is free, but there is a delivery fee for residential addresses.

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Chevrolet CT525 6.2L Crate Engine

This 6.2L CT525 crate engine is a high-revving racing-focused engine built to power oval track racers like super late model and modified racers. This engine is very similar to other LS offerings here at Karl Kustoms, but thanks to the carbureted intake manifold, racing oil pan, and coil-on-plug ignition, this powerhouse can produce 533 horsepower at 6,600RPM and 477 lb-feet of torque at 5,200RPM.

With its cast-aluminum block design and forged aluminum pistons, this engine offers the power of lightweight LS builds coupled with circle-track focused horsepower and revs. When compared to similar 6.2L LS applications, this powerhouse offers more than 100 extra horsepower and 100 extra torque over standard 6.2L street-focused LS3s, plus a big bump in redline. If you’d like to learn more about our crate engine program at Karl Kustoms, check out this page.

If you’re looking for a full crate motor, mechanical parts for your LS, or just finding the right parts for your custom build, the team at Karl Kustoms is happy to help. As part of a Chevrolet dealer here in Des Moines, Iowa, we know our GM hot-rod engines and the secrets to getting them running their best. Our team of in-house machinists and welders are happy to help you find the right fit for your project, racer, or hot rod. Give us a call at 866-697-8615, or you can check out our reviews here.

What’s Included

This lightweight, racing-focused engine will have your oval track car running at top speed in no time. Thanks to included parts like the:

  • Coil-on-plug ignition
  • SFI-certified balancer
  • Cross-bolted 6-bolt main caps
  • LS3 rectangular-port cylinder heads
  • Comes with GM anti-tamper fasteners installed

…this engine will save you from fitment headaches. If you’d like to see some of the customs we’re currently working on here at Karl Kustoms, check out this article. All you need to finish out this engine is a carburetor, starter motor, LSX ignition controller, an external oil filter, and an oil cooler.

Important Notes

This crate engine does not include a water pump or factory exhaust manifolds, as fitment may vary from application to application. Also of note:

  • Use LSX ignition controller P/N 19355863.
  • Requires addition of carburetor, starter, exhaust system, and front accessory drive system.
  • The 6-quart circle track oil pan is designed to clear most GM rear-steer chassis with stock engine location.
  • Requires external oil filter and cooler (will increase capacity to approximately 8 quarts).
  • For circle track racing only – not intended for street use.
  • The CT525 does not include a water pump or factory exhaust manifolds.
  • Circle track racing engines from Chevrolet Performance include anti-tampering seals installed.
  • Replaces old GM P/N 19271821,19331563,19418211, and 19432720
Weight 427 lbs


19331563, 19421061

Chevrolet CT525 6.2L Specs

  • Part Number: 19432720
  • Power: 533 hp @ 6,600 rpm / 477 lb.-ft. @ 5,200 rpm
  • 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 6-bolt, cross-bolted main caps
  • Crankshaft (P/N 19431873): 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 rectangular port; aluminum as-cast with 68cc chambers
  • Valve Size (in): 2.165 intake / 1.590 exhaust
  • Compression Ratio: 10.7:1 Nominal
  • Rocker Arms (P/N 12696105 int): Investment-cast, roller trunnion
  • Rocker Arms (P/N 12681275 exh): Investment-cast, roller trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: Premium pump
  • Reluctor Wheel: 58x
  • Maximum Recommended rpm: 6,700
  • Balanced: Internal


Click here to download installation information.

Chevrolet Performance Racing Crate Engines are excluded from limited warranty.


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