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Product Summary

383, Long Block Crate Engine Type, 445 ft./lbs. Torque

  • When it comes to cranking serious torque from the classic Small-Block, it's hard to beat the 383 stroker combination
  • Uses a long 3.800 inch stroke with 4.005 inch bores to generate exceptional low-end pulling power and surprising high-rpm horsepower
  • Features lightweight aluminum cylinder heads based on the proven Fast Burn design
  • Beehive-style valve springs enable great high-rpm performance and durability, allowing the SP383 to rev higher and build more horsepower

Rebates Available

Key Specs

MFG. Part #19418657
BrandChevrolet Performance Parts
Crate Engine TypeLong Block
Engine Displacement383 cu. in.

Need To Know

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Details

When it comes to cranking serious torque from the classic Small-Block, it’s hard to beat the 383 stroker combination, which uses a long, 3.800-inch stroke with 4.005-inch bores to generate exceptional low-end pulling power and surprising high-rpm horsepower.

It features lightweight aluminum cylinder heads based on the proven Fast Burn design, with large intake runners and 2.00/1.55-inch valves. Beehive-style valve springs enable great high-rpm performance and durability, allowing the SP383 to rev higher and build more horsepower.

  • Engine Type: Chevy Small-Block V8
  • Displacement (cu. in.): 383
  • Bore x Stroke (in.): 4.000 x 3.800
  • Block: Cast-iron with 4-bolt main caps
  • Crankshaft: Forged steel
  • Connecting Rods: Heavy-duty forged steel
  • Pistons: Hypereutectic aluminum
  • Camshaft Type: Hydraulic roller
  • Valve Lift (in.): .509 intake / .528 exhaust
  • Camshaft Duration (@.050 in.): 222° intake / 230° exhaust
  • Cylinder Heads: Fast Burn aluminum; 62-cc chambers
  • Valve Size (in.): 2.000 intake / 1.550 exhaust
  • Compression Ratio: 9.6:1
  • Rocker Arms (P/N 19210724): Aluminum roller style
  • Rocker Arm Ratio: 1.5:1
  • Recommended Fuel: Premium pump
  • Ignition Timing: 36° total at 4000 rpm
  • Maximum Recommended rpm: 6000
  • Balanced: External

Warranties

Rebates

Chevy Performance Rebate

Chevrolet Performance $500, $750, or $1,000 rebate on Connect & Cruise systems. Rebate amount dependent on package purchased. Rebates may be submitted over two invoices if within 120 days of each other. See gmpartsrebates.com for details, applicable rebate amounts and rebate form.

CARB Warning

Follow EPA, CARB, and state regulations for engine changes

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine

Specifications

KEY SPECS
MFG. Part #19418657
BrandChevrolet Performance Parts
Crate Engine TypeLong Block
Engine Displacement383 cu. in.
GENERAL
Horsepower435 horsepower
Compression Ratio9.6:1
Torque445 ft./lbs.
Maximum RPM6,000
Camshaft TypeHydraulic Roller Tappet
Cylinder Head MaterialAluminum
Piston MaterialHypereutectic Aluminum
Crankshaft MaterialForged Steel
Combustion Chamber Volume62cc
Camshaft Duration (.050 in)222° intake / 230° exhaust
Camshaft Lift (in).509 intake / .528 exhaust
Bore x Stroke (in)4.000" x 3.800"
Carburetor IncludedNo
Intake Manifold IncludedYes
Distributor IncludedNo
Connecting Rod MaterialForged Steel
Valve Covers IncludedYes
AssembledYes
Engine BalanceExternal
Cylinder Heads IncludedYes
Rear Main Seal Style1-piece
Throttle Body IncludedNo
Oil Pan IncludedYes
Timing Cover IncludedYes
Water Pump IncludedYes
Harmonic Balancer IncludedYes
Flexplate IncludedYes
Flywheel IncludedNo
Air Cleaner IncludedNo
Spark Plugs IncludedNo
Spark Plug Wires IncludedNo
Computer IncludedNo
Wiring Harness IncludedNo
Cylinder Head StyleAssembled
Intake Valve Diameter2.000"
Exhaust Valve Diameter1.550"
Rocker ArmsAluminum roller
Rocker Arm Ratio1.5:1
Recommended FuelPremium
BlockCast Iron, 4 bolt main
Sold in QuantityEach