GM 350CT Crate Engines

gm604GM Performance CT350

Chevrolet Performance’s CT350 delivers 350 horsepower from a classic 350 cubic-inch combination. It’s just the thing budget-conscious racers can depend on for competitive performance and low-maintenance durability.

The CT350 is based on the popular 350 HO high-performance street crate engine, including a stout four-bolt main block and Vortec-style iron cylinder heads. The Vortec heads and unique dual-pattern camshaft help deliver more than 300 lb-ft of torque at 2000 rpm and hold it above that mark through 5500 rpm — it peaks at 390 lb-ft at 3800 rpm. With that much pulling power, you can hold a gear longer, keeping the engine in its sweet spot for quicker laps.

We complete the CT350 with an 8-quart Circle Track racing oil pan, balancer, HEI distributor, and an aluminum high-rise, dual-plane intake manifold. Add your carburetor, starter, spark plugs, wires, and water pump — all available at chevroletperformance.com — and you’ll be ready to roll into the winner’s circle!

CT350 TECH SPECS

Part Number:
19258602
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 four-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; 64-cc chambers
Valve Size (in.):
1.940 intake / 1.500 exhaust
Compression Ratio:
9.12 nominal
Rocker Arms (P/N 10089648):
Stamped steel
Rocker Arm Ratio:
1.5:1
Recommended Fuel:
92 octane
Ignition Timing:
Base 10° BTDC, 32° Total
Maximum Recommended rpm:
5500

 

 

GM Performance CT400CT400_lg

Chevrolet Performance’s 23-degree Fast Burn heads have large, 210-cc intake runners and 2.00/1.55-inch valves, along with specially shaped combustion chambers that make quick, efficient work of the air/fuel charge. When partnered with an aggressive, high-lift camshaft, you’ve got a great balance of horsepower and torque — and that’s exactly what you get with the CT400 racing engine.

The foundation for the CT400 is our Fast Burn 385 crate engine, including a sturdy iron block with four-bolt mains, a forged crankshaft and high-strength pistons. We’ve tuned the CT400 for more power, and it’s rated at an even 400 horses and 400 lb-ft of torque.

Rounding out the package is a racing oil pan with a dual kick-out design, as well as a valve cover breather kit, special aluminum roller rocker arms, a single-plane aluminum high-rise intake manifold, and balancer. You add the water pump, carburetor, starter, distributor, spark plugs, and wires. They’re all available from chevroletperformance.com.

CT400 TECH SPECS

Part Number:
88958604
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 four-bolt main caps
Crankshaft (P/N 12556307):
Forged steel
Connecting Rods (P/N 10108688):
Powdered metal steel
Pistons (P/N 10159436):
Hypereutectic aluminum
Camshaft Type (P/N 10185071):
Steel hydraulic roller
Camshaft Lift (in.):
.474 intake / .510 exhaust
Camshaft Duration (@.050 in.):
208° intake / 221° exhaust
Cylinder Heads (P/N 12464298):
Fast Burn aluminum, 62-cc chambers
Valve Size (in.):
2.000 intake / 1.550 exhaust
Compression Ratio:
9.72 Nominal
Rocker Arms (P/N 19210724):
Aluminum, roller style
Rocker Arm Ratio:
1.5:1
Recommended Fuel:
92 octane
Ignition Timing:
Base 10° BTDC, 32° Total
Maximum Recommended rpm:
5800