Page 98 of GM Performance Parts 2006 Catalog by GM Parts Direct

96 GM Performance Parts does not utilize any used or remanufactured parts in this crate engine. 88890533 HT502 Emission Legal Truck Conversion Kit CRATE ENGINES BIG-BLOCK Our HT502 Emission Legal (50 state) Conversion Kit is designed for 1991-93 Chevrolet and GMC 10-, 20-, and 30-series trucks with two-wheel drive, originally equipped with a 454 TBI engine and 4L80E automatic overdrive transmission. This kit will dramatically improve the towing capabilities of your truck, as the HT502 is a direct bolt-in replacement for any high-mileage 454. With more cubic inches, improved efficiency, and more horsepower and torque, the HT502 will give your aged GM truck substantially more torque than the factory 454 ever delivered. The HT502 engine comes assembled with an oil pan, timing set, valvetrain, valve covers, and damper. You simply swap the outgoing engines TBI manifold and throttlebody, ignition system, and other components onto this engine. A new PROM electronic control module (ECM) chip is included, along with a detailed instruction guide. Additionally, the kit includes transmission, exhaust, and fuel system upgrades to make the swap easy and complete. Technical Note: This kit will not work on four-wheel drive trucks, due to an exhaust interference. 12568782 ZZ502/502 Partial Engine This brand new partial engine includes the forged reciprocating components, as well as the balancer, oil pan and timing chain set. Just add GMPP or your custom cylinder heads, intake, carburetor and ignition system to complete. This partial engine comes with camshaft P/N 12366543, but must be changed to camshaft P/N 12552296 to match HT502 specifications. Use externally balanced flywheel or flexplate. GM Performance Parts crate engines include a twelve-month, 12,000-mile warranty. W NOTE: Intended for pre-1977 street vehicles and all off-road vehicles. Not intended for marine use. GM Performance Parts does not utilize any used or remanufactured parts in this crate engine. GM Performance Parts crate engines include a twelve-month, 12,000-mile warranty. W

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