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Chevrolet - 502 RETRO-KIT TRUCK ENGINE CONVERSION KIT | |
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The 502 Retro-Kit truck engine is tuned for torque with high velocity round port heads and Vortec L29 hydraulic roller camshaft. Keys - allengine, scperformanceeng, gmperformanceeng, gmgoodwrencheng. Use allengine for a complete list of all three. |
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ZZ 502/502 NAVIGATION | |
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502 RETRO-KIT TRUCK ENGINE CONVERSION KIT DESCRIPTION | |
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502 Retro-Kit 91-93 P/U Conversion Kit.
P/N 88890533
This new emission-legal (50 state) Retro-Kit engine conversion kit is designed for 1991-93
Chevrolet and GMC 10, 20 and 30-series trucks with 2-wheel drive, originally equipped with a 454
TBI engine and 4L80E automatic overdrive transmission. (Will not work on 4-wheel drive because of
exhaust interference.) Factory engineered for improved towing performance, the massive GEN 6 502
big-block is a bolt-in replacement for a high mileage 454. The increased displacement and improved
breathing produces a significant improvement in pulling power over the production 454 truck engine.The 502 engine is tuned for torque with high velocity round port heads and Vortec L29 hydraulic roller camshaft. This combination yields 515 lb ft. of torque at a stump pulling 2800 rpm and 320 horsepower at 4400 rpm. This retro-kit engine package uses the same rugged bottom end as the 502 HO engine assembly. The siamesed bore block incorporates four-bolt main bearing caps, a forged steel crankshaft, heavy duty connecting rods and forged aluminum pistons. The long block assembly comes fully assembled and is designed to utilize the existing 454 TBI inlet manifold, ignition system and accessory drive components. The 502 engine, in this kit, comes assembled with an oil pan, timing set, valve train, valve covers, and damper. You simply swap the outgoing engine’s TBI manifold and throttle body, ignition system, and other components onto this engine. A specific engine computer chip (PROM electronic control module, ECM for short.), dual catalyst exhaust system, detailed instruction guide, and additional fuel and transmission hardware is included to complete the conversion. The California Air Resources Board (CARB) has issued an exemption order for this conversion. Conversion Components List - use your browser’s back button to return here after viewing the list. |
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502 RETRO-KIT TRUCK ENGINE CONVERSION KIT SPECIFICATIONS | |
| Gross Horsepower: | 320 at 4400 rpm |
| Gross Torque: | 515 ft.-lbs. at 2800 rpm |
| Displacement: | 8.2L or 502 cubic inches. |
| Bore/Stroke: | 4.446”/4.00” |
| Engine Block: | GEN 6 design with 4-bolt mains and siamesed cylinder bores |
| Crankshaft: | Forged 1053 steel, one-piece rear main seal |
| Flywheel: | 14” diameter flexplate with dual torque converter pattern |
| Connecting Rods: | Forged 4340 steel with 7/16” Rod Bolts |
| Pistons: | Forged aluminum with mini-dome |
| Compression Ratio: | 8.75:1 |
| Camshaft: | L29 hydraulic roller P/N 12552296 |
| Valve Lift: | .480” I, .483” E |
| Duration: | 204° I, 209° E @ .050” Lift |
| Cylinder Heads: | Cast iron round port with 2.07”/1.72” valves and 118 cc open combustion chamber |
| Spark Timing: | See tune-up label on truck |
| Fuel: | Unleaded premium 92 octane (R+M/2) |
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• Factory engineered engine conversion • Emission-legal in 50 states (CARB E.O. # D-126-3) • Fully assembled long-block less manifolds, distributor, and water pump • 6016 steel distributor drive gear for roller camshaft • Low restriction 454 SS dual catalyst, dual exhaust system • 18 psi fuel pressure regulator |
• High flow in-tank fuel pump • PROM chip specially calibrated for 502 engine • Revised transmission spacer plate for positive shifts • Auxiliary transmission oil cooler • Transmission oil pan with drain plug • Comprehensive installation guide |
| Down load the PDF file on this engine. It is the complete 2 pages out of the 2004 GMPP catalog which includes the Service Parts List for Gen 6 502 Chevrolet Big-Blocks. It shows the list of parts broken down between the partial engine, this engine and a couple of other engines. Some of the part numbers may be old by now, but it will still be a big help to some people. 88890533.PDF Download | |
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