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  • ZZ 383 Small Block Crate Engine
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hp @ 5400 rpm

The classic Small-Block stroker as only Chevrolet Performance can do it

The ZZ383 delivers Big-Block power with Small-Block efficiency. We use the sturdy 383 bottom end, including a brand-new block with four-bolt mains, a forged crankshaft, and heavy-duty rods, and finish it off with Fast Burn cylinder heads to enable 425 horsepower and 449 lb-ft of torque.

The Fast Burn heads use high-flow intake runners, 2.00/1.55-inch valves, and a unique combustion chamber design to process air quickly and efficiently. A roller camshaft with more than 0.500-inch lift on both the intake and exhaust sides helps this potent engine maximize airflow. It is complemented by friction-reducing aluminum roller-tip rocker arms.

The ZZ383 comes in Base crate engine form, with a cast-iron water pump and balancer. The induction system, ignition system, and other accessories must be purchased separately. Use high-rise intake P/N 12496822 and Holley 770-cfm four-barrel carburetor P/N 19170093 to achieve the listed horsepower and torque ratings.

Your Chevrolet Performance dealer has everything you need to finish off the engine — including chrome dress-up parts!


Click on the slider to see the torque and power ratings change with rpm.*

*Approximate values shown.


Part Number:
Engine Type:
Chevy Small-Block V-8
Displacement (cu. in.):
Bore x Stroke (in.):
4.000 x 3.800
Block (P/N 88962516):
Cast-iron with four-bolt main caps
Crankshaft (P/N 12489436):
4340 forged steel
Connecting Rods (P/N 12497624):
Heavy-duty PM steel
Pistons (P/N 12499103):
Hypereutectic aluminum
Camshaft Type (P/N 19210723):
Hydraulic roller
Camshaft Lift (in.):
.509 intake / .528 exhaust
Camshaft Duration (@.050 in.):
222° intake / 230° exhaust


Cylinder Heads (P/N 12464298):
Fast Burn aluminum; 62-cc chambers
Valve Size (in.):
2.000 intake / 1.550 exhaust
Compression Ratio:
Rocker Arms (P/N 12367345):
Aluminum roller style
Rocker Arm Ratio:
Recommended Fuel:
92 octane
Ignition Timing:
Base 10° BTDC, 32° Total
Maximum Recommended rpm:


Already own one, but lost some of the paperwork? We’ve got you covered with downloads and links for some of the more important documents below. You’ll find everything from the vital data about your engine’s capabilities to how to install it into your build, even all of the warranty information should you need to make a claim. And don’t forget, the best way we can make sure to get you the latest information on your specific part is to tell us which one you have by registering your engine. No matter what stage of your build you’re in — from shopping for the right part to that part having turned in a few miles — we have the information you need.

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  • ZZ 383 Small Block Crate Engine Installation


    • Requires addition of carburetor, ignition, intake manifold, fuel pump, and starter (not included)
    • 425-horsepower rating achieved during GM testing with high-rise single-plane intake manifold (P/N 12496822) and a 770-cfm carburetor with vacuum secondaries
    • Chevrolet Performance dual-plane intake manifold (P/N 12366573) may be used to avoid hood clearance problems, but peak power may decrease by approximately 15-20 horsepower
    • Comes with 12.750-inch automatic transmission flexplate. Requires 1986-1999 350-style externally balanced flywheel for manual transmission
    • Designed for pre-1976 street vehicles or any off-road vehicle
    • Not intended for marine applications
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Download a catalog for a full listing of components and related parts.

Hydra-Matic 4L65-E Four-Speed Automatic
Transmission • P/N 19260380

Transmission Controller • P/N 19212657

Intake Manifold, Vortec Design • P/N 12496822

Serpentine Accessory Drive System • P/N 12497698

HEI Distributor • P/N 93440806

High-Torque Mini-Starter • P/N 12361146

  • 1 Performance MSRP The Manufacturer's Suggested Retail Price excludes tax, shipping and installation.

Destination Freight Charges

To allow you to do an accurate price comparison with prices featured on other Internet sites, GM provides Internet pricing both with and without the Destination Freight Charge (see prices including Destination Freight Charge below). To get full pricing details, go to our Build Your Own section.