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SP383 Chevrolet Performance Crate Engine

Brand: Chevrolet Performance

Part Number: 19355722



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SP383 Deluxe Chevrolet 383 c.i.d. Crate Engine

More stroke, more size, more cam, more power. More is better. Get MORE!

This stroked Small-Block is the latest triumph from Chevrolet Performance. Improved Fast Burn-style cylinder heads and a specific high-flow aluminum intake manifold combined with the extra cubic inches from the longer stroke, push horsepower and torque to 445!

The updated aluminum heads feature 2.00/1.55-inch valves, a unique combustion chamber design and LS-style beehive valve springs for greater high-rpm performance and durability. A hydraulic roller camshaft with more the 0.500-inch lift optimizes the airflow enabled by the high-flow head design.

The SP383 is built with a brand-new block featuring four-bolt main caps. It also features a forged steel crankshaft. Unique valve covers distinguish the engine from previous versions!


SP383 Deluxe Chevrolet 383 c.i.d. Crate Engine

SP383 Specs:
Part Number: 19355722
Engine Type: Chevy Small-Block V-8
Displacement (cu in): 383
Bore x Stroke (in): 4.000 x 3.800
Block (P/N 88962513): Cast-iron with 4-bolt main caps
Crankshaft (P/N 12489436): Forged steel
Connecting Rods (P/N 12497624): Heavy-duty PM steel
Pistons (P/N 12499103): Hypereutectic aluminum
Camshaft Type (P/N 19210723): Hydraulic roller
Camshaft Lift (in): .509 intake / .528 exhaust
Camshaft Duration (@.050 in): 222° intake / 230° exhaust
Cylinder Heads (P/N 19300955): Fast Burn aluminum; 62cc chambers
Valve Size (in): 2.000 intake / 1.550 exhaust
Compression Ratio: 9.6:1 nominal
Rocker Arms (P/N 12367345): Aluminum Roller Style
Rocker Arm Ratio: 1.5:1
Recommended Fuel: 92 octane
Ignition Timing: Base 36° Total at 4,000 rpm
Maximum Recommended rpm: 6,000
Balanced: External


Installation Notes:

  • Requires addition of carburetor, ignition/distributor, fuel pump and starter (all not included)
  • MUST use distributor with melonized steel gear (P/N 10456413), or engine damage will occur
  • Horsepower numbers were developed with a 770 cfm Holley carburetor, P/N 19170093 (not included)
  • Chevrolet Perf. dual-plane intake manifold (P/N 12366573) may be used for more hood clearance (sold separately)
    • Use of the dual-plane, low-rise intake manifold may decrease peak power by 15-20 hp
  • Does not include dipstick, dipstick tube, thermostat, thermostat housing or spark plugs
  • Includes a 12.75" 153-tooth Flexplate for Automatic Transmissions (P/N 14088765)
  • Designed for pre-1976 street vehicles or any off-highway vehicle
  • Not intended for marine applications


Supersedes old GM P/N 19332532



Chevrolet Performance Crate Engines include a 24-month or 50,000-mile (80,000 kilometer) limited warranty.

Click here for more detailed warranty information.