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.
Highlights
- 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
Specifications
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Crate Engine Type: Deluxe Crate Engine
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Engine Displacement: 350 cu. in.
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Horsepower: 400 horsepower
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Compression Ratio: 9.72:1
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Torque: 400 ft./lbs.
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Maximum RPM: 5,800
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Camshaft Type: Hydraulic Roller Tappet
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Cylinder Head Material: Aluminum
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Piston Material: Hypereutectic Aluminum
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Crankshaft Material: Forged 4340 Steel
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Combustion Chamber Volume: 62cc
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Camshaft Duration (.050 in): 208° intake / 221° exhaust
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Camshaft Lift (in): .474 intake / .510 exhaust
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Bore x Stroke (in): 4.000" x 3.480"
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Carburetor Included: No
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Intake Manifold Included: Yes
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Distributor Included: No
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Connecting Rod Material: Powdered Metal
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Warranty: None
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Valve Covers Included: Yes
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Assembled: Yes
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Engine Balance: External
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Cylinder Heads Included: Yes
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Rear Main Seal Style: 1-piece
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Throttle Body Included: No
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Oil Pan Included: Yes
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Timing Cover Included: Yes
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Water Pump Included: No
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Harmonic Balancer Included: Yes
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Flexplate Included: No
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Flywheel Included: No
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Air Cleaner Included: No
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Spark Plugs Included: Yes
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Spark Plug Wires Included: No
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Computer Included: No
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Wiring Harness Included: No
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Cylinder Head Style: Assembled
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Intake Runner Volume: 210cc
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Intake Valves Included: Yes
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Intake Valve Diameter: 2"
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Exhaust Valves Included: Yes
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Exhaust Valve Diameter: 1.55"
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Camshaft Included: Yes
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Cylinder Heads: Fast Burn with LS-style Beehive Springs
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Rocker Arms: Aluminum roller
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Rocker Arm Ratio: 1.5:1
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Block: 4 bolt main
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MFG. Part #: 19419604
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Notes: IMCA-sealed for competition
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Sold in Quantity: Each
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Spark Plug Style: Angle
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Brand: Speedway Motors Racing Engines
