The Chevrolet Performance HT383E crate engine is an affordable and more powerful emissions-legal# direct replacement for the tired 350 engine in your 1996-99 full-size GM truck or SUV. The larger displacement delivers up to 10 percent more horsepower and more usable torque for effortless towing. It is extra power you won’t get with a stock-type rebuild or reconditioned used engine.
The HT383E is designed to replace the L31 5.7-liter engine in half-ton models of the Silverado, Suburban, Tahoe, Sierra, and Yukon. You simply swap the intake manifold, throttle body, exhaust manifolds, and other accessories from your old 350 onto the HT383E and install it in your truck with no further modifications.
The engine uses a brand-new four-bolt main block, a forged steel crankshaft, a smooth roller camshaft, and durable iron Vortec heads, helping it deliver the dependable power you expect from the venerable Small-Block V-8. It even comes with a new distributor, water pump, and other components that would be replaced during a rebuild.
#This engine is not emissions-legal in CA or states that have adopted CA emissions regulations
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):
Camshaft Type (P/N 14097395):
Camshaft Lift (in.):
.431 intake / .451 exhaust
Camshaft Duration (@.050 in.):
196° intake / 206° exhaust
Cylinder Heads (P/N 12558060):
Vortec iron; 64-cc chambers
Valve Size (in.):
1.940 intake / 1.500 exhaust
Rocker Arms (P/N 10089648):
Rocker Arm Ratio:
Water Pump (P/N 88894341):
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. Click here to see the 2015 City Express destination freight charge. Click here to see the 2015 Colorado destination freight charge.
***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.