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Chevrolet Performance 19318604 CT400 IMCA Sealed 604 Crate Engine

Brand: Chevrolet Performance

Part Number: 19318604

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CT400 604 IMCA Sealed Racing Crate Engine

The Chevrolet Performance CT400 IMCA Modified crate engine now features new cylinder head assemblies with LS-style beehive valve springs that enable greater high-rpm performance and durability. Those lightweight aluminum heads are based on the proven Fast Burn design, with large intake runners and 2.00/1.55-inch valves. The CT400 also has a tough bottom end, with a forged steel crankshaft and strong aluminum pistons installed in a new four-bolt main block.

The IMCA sealed '604' crate engine assembly also includes an open-plenum high-rise intake manifold, a racing-only 8-quart circle track oil pan with a dual kick-out design, a valve cover breather kit and aluminum roller rocker arms.

604 Chevy Crate Engine IMCA A-Mod/Modified CT400 Sealed

 

 

High-Revving Performance and Durability!  Engine ships with IMCA stamped seals installed.

The Chevrolet Performance CT400 IMCA Modified racing crate engine now features Fast Burn cylinder heads with LS-style beehive valve springs that enable greater high-rpm performance and durability. They allow this Chevy engine to rev higher to make the most of every cubic inch of air drawn through it.

The beehive springs are part of the lightweight aluminum cylinder assemblies, which are based on the proven Fast Burn design, with large intake runners and 2.00/1.55-inch valves. The GM CT400 also has a tough bottom end, anchored by a forged steel crankshaft and strong aluminum pistons installed in a brand-new block with four-bolt mains.

The sealed 604 crate engine assembly also includes an open-plenum high-rise intake manifold, a racing only 8-quart circle track oil pan with a dual kick-out design, a valve cover breather kit and aluminum roller rocker arms.


404 hp @ 5,600 rpm / 406 lb.-ft. @ 4,600 rpm

 

19318604 Chevrolet Crate Motor

Circle Track 400 Tech Specs:
Part Number: 19318604
Engine Type: Chevy Small-Block V-8
Displacement (cu in): 350
Bore x Stroke (in): 4.000 x 3.480
Block (P/N 10105123): Cast-iron with 4-bolt main caps
Crankshaft (P/N 12556307): Forged steel
Connecting Rods (P/N 10108688): Powdered metal
Pistons (P/N 10159436): Hypereutectic aluminum
Camshaft Type (P/N 10185071): Steel hydraulic roller
Valve Lift (in): .474 intake / .510 exhaust
Camshaft Duration (@.050 in): 208° intake / 221° exhaust
Cylinder Heads (P/N 19300955): Fast Burn aluminum; 62cc chambers
Valve Size (in): 2.000 intake / 1.550 exhaust
Compression Ratio: 9.72:1 Nominal
Rocker Arms (P/N 19210724): Aluminum; roller style
Rocker Arm Ratio: 1.5:1
Recommended Fuel: Premium Pump
Ignition Timing: 36° Total @4,000 rpm
Maximum Recommended rpm: 5,800
Balanced: External

Installation Notes:

  • 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 "Late-Model" (P/N 25534354) oil pan is 7 inches deep at the sump and will clear most GM rear-steer chassis with stock engine location
  • For Circle Track Racing only – NOT intended for street use

Note: Distributor NOT included (P/N 88961867 recommended) with CT400 engine. MUST use melonized steel gear (P/N 10456413) on engines with steel camshafts, or engine damage will occur.

Chevrolet Performance Racing Crate Engines are excluded from limited warranty.