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88869602 Chevrolet Performance 602 Circle Track Engine

Brand: Chevrolet Performance

Part Number: 88869602




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CT350 602 Racing Crate Engine

Powerful, Durable and Affordable! Engine ships with IMCA stamped seals installed.

This Chevy race engine is designed for circle track use in the IMCA Sport Mod and Hobby Stock classes. It features a strong four-bolt main block and iron Vortec cylinder heads. A unique dual-pattern camshaft helps deliver more than 300 lb.-ft. of torque between 2,000 and 5,500 rpm – peaking at 396 lb.-ft. at 3,800 rpm. With that much pulling power, you can hold a gear longer, keeping the engine in its sweet spot for quicker laps.

GM assembles the CT350 Sealed 602 with an 8-quart circle track racing oil pan, balancer, HEI distributor and an aluminum high-rise, dual-intake manifold. Add your carburetor, starter, spark plugs, wires and water pump as well as GM's anti-tamper bolts to seal it up. IMCA seals added at our location to legalize it for IMCA Crate classes.

Chevy CT350 Sealed 602 IMCA Performance Crate Engine

 Powerful, Durable and Affordable! Engine ships with IMCA stamped seals installed.

The CT350 by Chevrolet Performance is the powerful, durable and affordable IMCA legal engine that budget-conscious racers can depend on for race-winning performance and low maintenance!

350 hp @ 5,400 rpm / 396 lb.-ft. @ 3,800 rpm

Circle Track 350 Tech Specs:
Part Number: 88869602
Engine Type: Chevy Small-Block V-8
Displacement (cu in): 350
Bore x Stroke (in): 4.000 x 3.480
Block (P/N 10105123): Cast-iron with 4-bolt main caps
Crankshaft (P/N 10243068): Nodular iron
Connecting Rods (P/N 10108688): Powdered metal steel
Pistons (P/N 94672680): Hypereutectic aluminum
Camshaft Type (P/N 24502476): Hydraulic flat tappet
Camshaft Lift (in): .435 intake / .460 exhaust
Camshaft Duration (@.050 in): 212° intake / 222° exhaust
Cylinder Heads (P/N 12558060): Vortec iron; 64cc chambers
Valve Size (in): 1.940 intake / 1.500 exhaust
Compression Ratio: 9.12:1 Nominal
Rocker Arms (P/N 10089648): Stamped steel
Rocker Arm Ratio: 1.5:1
Recommended Fuel: Premium Pump
Ignition Timing: 34° Total @ 4,000 rpm
Maximum Recommended rpm: 5,500
Balanced: External

Installation Notes:

  • Requires addition of carburetor, starter, water pump, plug wires and exhaust system (not included)
  • Requires an externally balanced flywheel (not included)
  • The 8-quart Circle Track "Factory Stock" oil pan (P/N 25534353) is 8 inches deep at the sump and will clear most GM rear-steer chassis with stock engine location
  • Get the most out of your engine with dyno tuning from the Karl Performance professionals - call for details
  • For Circle Track Racing only – NOT intended for street use

Note: Distributor (P/N 93440806) included with CT 350 engine has a melonized steel gear (P/N 10456413) that MUST be used with engines with steel camshafts, or engine damage will occur.


Old P/N 19258602

Chevrolet Performance Racing Crate Engines are excluded from limited warranty.