The ZZ4 350 crate engine is Chevrolet Performance’s original affordable crate engine. In Turn-Key form, it comes with everything you need to get it running in your project vehicle.
High-flow aluminum heads are the keys to the ZZ4’s robust 355 hp and 405 lb-ft of torque. They boast 163-cc intake runners, raised exhaust ports, and tight, 58-cc combustion chambers that enhance compression and power. The heads feature 1.94/1.50-inch valves for efficient performance.
The rest of the ZZ4 350 is comprised of premium materials including a brand-new four-bolt block, forged steel crankshaft, high-silicon pistons, and a hydraulic roller camshaft. It also includes an aluminum intake, Holley four-barrel carburetor, and HEI distributor, as well as a starter, water pump, fuel pump, and front-end accessory drive kit — including an air conditioning compressor, alternator, and more!
If you want to finish off the engine yourself, try the ZZ4 350 Base engine (P/N 24502609) at a lower price. It includes only the intake manifold, distributor, water pump, damper, and flexplate.
Chevy Small-Block V-8
Displacement (cu. in.):
Bore x Stroke (in.):
4.000 x 3.480
Block (P/N 10105123):
Cast-iron with four-bolt main caps
Crankshaft (P/N 12556307):
Connecting Rods (P/N 10108688):
Powdered metal steel
Pistons (P/N 10159436):
High-silicon aluminum with offset pins
Camshaft Type (P/N 10185071):
Steel hydraulic roller
Camshaft Lift (in.):
.474 intake / .510 exhaust
Camshaft Duration (@.050 in.):
208° intake / 221° exhaust
Cylinder Heads (P/N 12556463):
Aluminum; 58-cc chambers
Valve Size (in.):
1.940 intake / 1.500 exhaust
Rocker Arms (P/N 10089648):
Rocker Arm Ratio:
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.
* The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.
***The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Includes destination freight charge and gas guzzler tax.
Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.
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.