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GMP-19301295-2R - Chevrolet Performance ZZ383 450HP Fully Assembled Engine with Black Finish

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Replaced by GMP-19332532-2X
Shipping: FREE 48 State Shipping


These all new fully dressed ZZ383's offer Big Block performance with a Small Block price tag and offer an incredible 450 ft. lbs. of torque @ 4500 rpm with a smooth, linear delivery. The combination of a 3.800 steel crank and a stout .509/.528 lift hydraulic roller camshaft produces 450hp @ 5400 rpm, making the ZZ383 the benchmark by which all other 383cid small blocks will be measured.

Power: 450 HP @ 5400 RPM, 450 ft. lbs. of torque @ 4500 RPM
Displacement: 383 CID
Bore x Stroke: 4.00” x 3.80”
Compression Ratio: 9.6:1
Recommended Fuel: 92 Octane
Block: Cast Iron, 1 piece rear seal, 4-bolt main caps
Crankshaft: 4340 Forged Steel
Connecting Rods: HD Powdered Metal Steel
Pistons: Hypereutectic Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .509” Intake / .528” exhaust
Cam Duration @ .050”: 222 deg. Intake / 230 deg. Exhaust
Lobe Separation: 112 Degree
Cylinder Heads: GM Fast Burn Aluminum Dual Bolt Pattern, 3/8” screw-in rocker studs
Combustion Chamber: 62cc
Valves: .200” Intake/ 1.55” Exhaust
Rocker Arms: Aluminum Roller, 1.5:1 Ratio
Valve Springs: 12551483
Balance: External
Maximum GM Recommended RPM: 6000
Ignition Timing: Base 10 degrees BTDC, 32 degrees total

Engine Includes:
• Fully GM assembled long block
• Fabricated Black Anodized Aluminum Valve Covers
• Black 14” Air Cleaner
• GM Aluminum Vortec, Single Plane Intake
• GM Tuned Holley 770CFM Carb
• Performance Fuel Pump with Plumbing to Carb
• HEI Distributor, Plug Wires, Looms and Spark Plugs
• Oil pump, pick-up and oil pan
• 14” Auto Trans Flexplate
• 8” Harmonic Balancer
• Front timing cover
• Cast Iron Long Water Pump
• Oil Filter and Adapter
• Passenger Side RH Oil Dipstick and Tube

General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details.

Related Engines:
12499106 GM 383 Short Block
GMP-12498772-5R Fully Assembled ZZ383 425HP Engine
GMP-12496430-1 Fully Assembled ZZ430 350CID 430HP Engine
ZZ4 Base Long Block


  • GMP-19301295-2R
  • GMP-19301295-2R
  • PACE Performance
  • New


Shipping Information

  • Item Requires Shipping
  • 500.0 lbs.
  • FREE 48 State Shipping

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