The all new ZZ383 offers Big Block performance with a Small Block price tag.
GMPP starts with the legendary Fast Burn cylinder heads and 383cid, to offer an incredible 460 ft. lbs. of torque @ 4500 rpm with a smooth, linier delivery. The combination of a 3.800 steel crank and a stout .509/.528 lift hydraulic roller camshaft produces 425hp @ 5400 rpm, making the ZZ383 the benchmark by which all other 383cid small blocks will be measured.

• Power: 425 HP @ 5400 RPM, 460 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: 2.00" 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

• Fully GM assembled long block
• Stamped Steel Black OE Valve
• Oil pump, pick-up and oil pan
• 12-3/4" 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

Shipping Weight/Dimensions: Weight: 448.00 lbs Height: 0.00 in. Length: 0.00 in. Width: 0.00 in.

Shipping from warehouses in the U.S. and Canada! Performance Parts has over 20 warehouses in the U.S. and Canada so you can get your parts duty free! Call for availability. International Shipping now available! We now are shipping to customers Worldwide!