GMP-12498772-3 - GM Performance ZZ383 405HP Crate Engine with Polished Finish

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 458 ft. lbs. of torque @ 3800 rpm with a smooth, linear delivery. The combination of a 3.800 steel crank and a stout .509/.528 lift hydraulic roller camshaft produces 405hp @ 5250 rpm, making the ZZ383 the benchmark by which all other 383cid small blocks will be measured.

Specifications:
Power: 405 HP @ 5250 RPM, 458 ft. lbs. of torque @ 3500 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
• Polished 2 piece Aluminum Valve Covers
• Chrome 14” Air Cleaner
• GM Aluminum Vortec, Dual 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

Warranty:
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