ct525

CT525

Lightweight LS power 

The CT525 6.2L crate engine is based on the LS engine family and delivers serious power for serious racing series, including Super Late Model and modifieds.

PART NO. 19331563

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: 19331563
  • 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 12623967): Cast-aluminum with six-bolt, cross-bolted main caps
  • Crankshaft (P/N 12597569): Nodular iron
  • Connecting Rods (P/N 12607475): Powdered metal
  • Pistons (P/N 19207287): Hypereutectic 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 12569167 int): Investment-cast, roller trunnion
  • Rocker Arms (P/N 10214664 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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