CT400 Crate Engine – Chevy Performance 604 Sealed Crate Engine Dyno Tested (D1)

CT400 604 Crate Engine

Run ahead of the pack with the 400-horsepower CT400 crate engine (often referred to as the”604″). Based on the popular Fast Burn 385 street crate engine, these 604 Chevy IMCA-sealed racing engines include a bulletproof bottom end, anchored by a forged steel crankshaft and hypereutectic pistons. The 23-degree, Fast Burn aluminum heads enable tremendous power in the small-block V-8. The Fast Burn heads have a unique chamber design that helps completely burn all of the air/fuel mixture.

Now, Karl Kustoms is offering this 604 crate engine as a dyno-verified package that is ready to race. With this engine under the hood of your Modified or Late Model, you’ll put a “fast burn” on the competition! (Read more about dyno testing on the Karl Kustoms blog here.)

Note: This item is made to order. It will be shipped from our warehouse when it is produced.

What’s Included

• Fully assembled long block
• Black steel valve covers with valve cover breather kit
• Oil pump, pick-up, 8-quart circle track oil pan with a dual kick-out design
• Eliminator Vortec intake manifold
• Spark plugs
• 8″ harmonic balancer
• Front timing cover
• Dyno sheet of your engine
• IMCA-issued seals are installed

The Fast Burn Design includes:

• Proven lightweight aluminum cylinder head assemblies with large intake runners
• 2.00/1.55-inch valves, and strong aluminum pistons
• A brand-new block with four-bolt mains and a forged steel crankshaft
• An open-plenum high-rise intake manifold
• A racing-only 8-quart circle track oil pan with a dual kick-out design
• Valve cover breather kit and special “kool nut” rocker arm design
• Aluminum roller rocker arms.

Important Notes

• Requires the addition of a carburetor, starter, water pump, distributor and plug wires (not included). See 19419604D2 for “dressed” version of this engine.
• 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 the stock engine location.
• For Circle Track Racing only – not intended for street use.
• This item is made to order. It will be shipped from our warehouse when it is produced.
• Broke-in, dyno-verified HP/TQ, and IMCA-sealed for competition.
• Some parts are not legal for use in California or other states with similar laws/regulations.
• Dyno-verified horsepower and torque
• Piston rings are broken-in using our SuperFlow dyno system
• Lash and timing are individually tuned
• Engine is ready to race, right out of the crate
• IMCA-sealed for equal competition
• Popular in Modified and Late Model classes*

*Check track/series rules for approval qualifications.