Description
IMCA-Sealed CT400 Chevy 604 Crate Engine, Dyno Tested, Dressed
Run up front with the 400-horsepower CT400 crate engine (often referred to as the “604 crate”) featuring Fast Burn heads from GM Performance Parts. Now,
Speedway Motors Racing Engines
is offering this 604 crate engine as a
dressed &
dyno-verified package
that is ready to race!
These IMCA-sealed 604 crate racing engines 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.
Dyno-verified
horsepower and torque- Piston rings are broken-in using a
proprietary dyno program
- Lash and timing are
individually tuned
- MSD Pro-Billet
distributor is installed & timed
- Engine is
ready to race
, right out of the crate
IMCA-sealed
for equal competition- 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
Features
Includes:
- Fully assembled long block
- Black steel valve covers w/ breathers
- Oil pump, pick-up, 8 quart oil pan
- Eliminator Vortec intake manifold
- MSD Pro-Billet
85501
distributor - Moroso Ultra 40 spark plug wires, black, under-header (terminals installed)
- Spark plugs
- 8″ harmonic balancer
- Front timing cover
- Fuel pump block-off plate
Dyno sheet
of your engine- IMCA-issued bolts and is approved for use in IMCA
*Check track/series rules for approved applications.
| KEY SPECS | |
|---|---|
| MFG. Part # | 19419604 |
| Brand | Speedway Motors Racing Engines |
| Crate Engine Type | Long Block |
| Engine Displacement | 350 cu. in. |
| Horsepower | 400 horsepower |
| Compression Ratio | 9.6:1 |
| Torque | 400 ft./lbs. |
| Camshaft Type | Hydraulic Roller Tappet |
| Cylinder Head Material | Aluminum |
| Piston Material | Hypereutectic Aluminum |
| Crankshaft Material | Forged Steel |
| Combustion Chamber Volume | 62cc |
| Camshaft Duration (.050 in) | 208° intake / 221° exhaust |
| Camshaft Lift (in) | .474 intake / .510 exhaust |
| Bore x Stroke (in) | 4.000″ x 3.480″ |
| Carburetor Included | No |
| Intake Manifold Included | Yes |
| Distributor Included | No |
| Connecting Rod Material | Powdered Metal |
| Valve Covers Included | Yes |
| Engine Balance | External |
| Cylinder Heads Included | Yes |
| Rear Main Seal Style | 1-piece |
| Oil Pan Included | Yes |
| Timing Cover Included | Yes |
| Water Pump Included | No |
| Harmonic Balancer Included | Yes |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | Yes |
| Spark Plug Wires Included | Yes |






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