$275 Shipping
$275 Shipping
#35519301295
GM Performance 425 Horsepower ZZ383 Long Block, SB Chevy Engine
Discontinued
This item is currently not available
Shop all Crate Engines
Key Specs
| Crate Engine Type | Long Block |
| Engine Displacement | 383 cu. in. |
| Horsepower | 450 horsepower |
| Compression Ratio | 9.6:1 |
| Torque | 449 ft./lbs. |
Need To Know
Truck Shipment
Truck shipments must be pre-paid with a credit card, certified check or money order
Need help?
855.313.9176Quick and Easy Returns
Return PolicyDetails
Details
The all new ZZ383 offers Big Block performance with a Small Block price tag.
GMPP starts with the legendary Fast Burn cylinder heads and the 383cid bottom end, to offer an incredible 460 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.
GM's testing was completed using a GM single-plane intake manifold, a 750cfm Demon mechanical secondary carb, and 1-3/4 primary x 33 length headers with a 4 collector. A dual-plane intake manifold can be used, but will affect overall peak performance numbers by 15-20 HP.
Specifications:
GMPP starts with the legendary Fast Burn cylinder heads and the 383cid bottom end, to offer an incredible 460 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.
GM's testing was completed using a GM single-plane intake manifold, a 750cfm Demon mechanical secondary carb, and 1-3/4 primary x 33 length headers with a 4 collector. A dual-plane intake manifold can be used, but will affect overall peak performance numbers by 15-20 HP.
Specifications:
- Power: 450 HP @ 5400 RPM, 449 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: 12625033
- Balance: External
- Maximum GM Recommended RPM: 6000
- Ignition Timing: Base 10 degrees BTDC, 32 degrees total
- Fully GM assembled long block
- Black Aluminum Valve covers
- GM Eliminator Single Plane Vortec Intake Manifold
- 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
Warranty:
General Motors limited 2 year / 50,000 mile parts & labor warranty.
Specifications
Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 19301295 |
| Crate Engine Type | Long Block |
| Engine Displacement | 383 cu. in. |
| Horsepower | 450 horsepower |
| Compression Ratio | 9.6:1 |
| Torque | 449 ft./lbs. |
| Camshaft Type | Hydraulic Roller Tappet |
| Cylinder Head Material | Aluminum |
| Piston Material | Hypereutectic Aluminum |
| Crankshaft Material | Forged 4340 Steel |
| Camshaft Duration (.050 in) | 222° intake / 230° exhaust |
| Camshaft Lift (in) | .509 intake / .528 exhaust |
| Bore x Stroke (in) | 4.000" x 3.800" |
| Distributor Included | No |
| Connecting Rod Material | Powdered Metal |
| Cylinder Heads Included | Yes |
| Rear Main Seal Style | 1-piece |
| GENERAL | |
| Maximum RPM | 6000 |
| Assembled | Yes |
| Camshaft Included | Yes |
| Block | Cast Iron, 4 bolt main |
| Notes | Includes 12.75" automatice transmission flexplate. Needws externally balanced flywheel for manual transmission. |
| Sold in Quantity | Each |