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6 Select
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hp @ 5600 rpm

Fast Burn heads deliver race-winning power

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, rated at 404 horses and 406 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.


Click on the slider to see the torque and power ratings change with rpm.*

*Approximate values shown.


Part Number:
Engine Type:
Chevy Small-Block V-8
Displacement (cu. in.):
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:
Recommended Fuel:
92 octane
Ignition Timing:
Base 10° BTDC, 32° Total
Maximum Recommended rpm:


Already own one, but lost some of the paperwork? We’ve got you covered with downloads and links for some of the more important documents below. You’ll find everything from the vital data about your engine’s capabilities to how to install it into your build, even all of the warranty information should you need to make a claim. And don’t forget, the best way we can make sure to get you the latest information on your specific part is to tell us which one you have by registering your engine. No matter what stage of your build you’re in — from shopping for the right part to that part having turned in a few miles — we have the information you need.

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    • Requires addition of carburetor, starter, ignition, plug wires, water pump, distributor, and exhaust system (not included)

    • Requires an externally balanced flywheel (not included)

    • The 8-quart Circle Track oil pan is 7 inches deep at the sump. It will clear most GM rear-steer chassis with stock engine location

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Download a catalog for a full listing of components and related parts.

Distributor, Aluminum Billet HEI • P/N 88961867

Fuel Pump, Street Performance • P/N 12355612

High-Torque Mini-Starter • P/N 12361146

Carburetor, Holley 670-cfm • P/N 19170092

Air Cleaner, Classic Design • P/N 12342071

Spark Plug Wire Set • P/N 24502521

  • 1 Performance MSRP The Manufacturer's Suggested Retail Price excludes tax, shipping and installation.

Destination Freight Charges

To allow you to do an accurate price comparison with prices featured on other Internet sites, GM provides Internet pricing both with and without the Destination Freight Charge (see prices including Destination Freight Charge below). To get full pricing details, go to our Build Your Own section.