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GM Performance 425 Horsepower ZZ383 Long Block, SB Chevy Engine

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Specs
Sold in Quantity:
Each
Rear Main Seal Style:
1-piece
Camshaft Type:
Hydraulic Roller Tappet
Piston Material:
Hypereutectic Aluminum
Crankshaft Material:
Forged 4340 Steel
Cylinder Head Material:
Aluminum
Crate Engine Type:
Long Block
Connecting Rod Material:
Powdered Metal
MFG. Part #:
19301295
Maximum RPM:
6000
Torque:
449
Horsepower:
450
Engine Displacement:
383
GM Performance 425 Horsepower ZZ383 Long Block, SB Chevy Engine

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Please note the following about this product:

  • This product is discontinued.

Details

Reviews (0)

Q & A (2)

What's in the Box

Info

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:
  • 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
Engine Includes:
  • 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.

Customer Reviews

This product has no reviews.

Product Q&A

2 questions : 2 answers

1 answers

Looking for a replacement motor for my 89 Chevy truck. I'm wanting a stroker motor and I'm curious what will fit?

Kidd
Guntown, MS
January 08, 2015

Looking for a replacement motor for my 89 Chevy truck. I'm wanting a stroker motor and I'm curious what will fit?

Answers

January 09, 2015
EricM
Yes this engine will fit in your 89 Chevy truck but the intake manifold from your truck will not fit this engine. If you are eliminating the fuel injection then you can use an intake manifold such as 3252716. If you want to keep your fuel injections then you will need that intake as well as the TBI adapter 91060118.
1 answers

Will my stock intake work? I would like to purchase the zz383 this summer. I am new to this so I am trying to research now. Will my stock intake and fuel injection system work with this engine or should I upgrade at the same time?

leathernk67
Long Island, New York, USA
January 19, 2014

Will my stock intake work? I would like to purchase the zz383 this summer. I am new to this so I am trying to research now. Will my stock intake and fuel injection system work with this engine or should I upgrade at the same time?

Answers

January 20, 2014
EricM
No this engine is completely different from the original engine in your 2004 Chevy Silverado. While this engine could be swapped into your truck, I would suggest getting a LS crate engine instead so that most of the original accessories, engine mounts, etc. can be re-used. Sorry I do not carry any of the LS crate engines at this time.
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