Chevrolet Performance 88869604 CT400 IMCA-Sealed 604 Crate Engine

Run up front with the 400-horsepower CT400 crate engine featuring GM Fast Burn heads! GM Performance Parts' Fast Burn cylinder heads are the fast way to the winner's circle – and they're standard on the 350/400 GM racing engine (often referred to as the "604 crate") from GM Performance Parts.

These IMCA-sealed 604 crate engines, formerly sold as Chevrolet Performance 88869604, are based on the popular Fast Burn 385 street crate engine, but include a racing-only 8-quart circle track oil pan with dual kick-out design, along with a valve cover breather kit and special "kool nut" rocker arm design. The assembly also includes an open-plenum high-rise intake manifold and 1.5:1-ratio aluminum roller rockers.

The 604 crate engine includes 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 because of a unique chamber design that quickly and completely burns all of the air/fuel mixture – giving you maximum power. With the CT400 racing engine under the hood of your Modified or Late Model, you'll put a "fast burn" on the competition.

• High-revving matched components
• A fraction of the price of a custom engine
• Sealed with IMCA-issued bolts and is approved for use in IMCA
• Popular in Modified and Late Model classes*
• 400 HP @ 5500 RPM
• 400 ft. lbs. of torque @ 4500 RPM
• 4.00" x 3.48" bore x stroke
• 9.6:1 compression ratio
• 92 octane recommended fuel
• 4-bolt main caps
• Cam lift: .474" intake / .510" exhaust
• Cam duration @ .050": 208° intake / 221° exhaust
• 112° lobe separation
• 1.5:1 ratio aluminum roller rocker arms
• 2.00" Intake / 1.55" Exhaust valves

Includes:

• Fully assembled long block
• Black steel valve covers w/ breathers
• Oil pump, pick-up, 8 quart oil pan
• Eliminator Vortec intake manifold
• Spark plugs
• 8" harmonic balancer
• Front timing cover
• IMCA-approved seal kit

*Check track/series rules for approved applications.

IMCA Approved.

GM CT400 Spec Sheet (PDF)