ALL CONVERSION KIT

Part Number: 88890533

ALL  CONVERSION KIT - Part Number 88890533
Conversion Kit Emissions Legal Truck. Get all the power of the HT502 with emissions-legal assurance. This conversion kit is an approved replacement for 1991-93 Chevy and GMC two-wheel-drive trucks and carries Carb E.O. D-126-3. The 502 engine comes assembled with an oil pan, timing set, valvetrain, 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 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 to complete. 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. The combination yields 515 lb ft of torque at a stump pulling 2800 rpm and 320 horsepower at 4400 rpm. This retro-fit 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. A specific engine computer chip, dual catalyst exhaust system, and additional California Air Resources Board (CARB) has issued an exemption order for this conversion. (Automatic transmission use only). 502 Engine Specifications for the Retro-Kit Engine Convesion: Displacement: 8.2L or 502 cubic inches Compression Ratio: 8.75:1 Gross Horsepower: 328 at 4400 rpm Bore/Stroke: 4.446 in/4.00 in Engine block: G3EN 6 design with 40 bolt mains and siamesed cylinder bores Crankshaft: Forged 1053 steel, one-piece rear main seal Connecting Rods: Forged 4340 steel with 7/16 in rod bolts Pistons: Forged aluminum with mini-dome Camshaft: L29 hydraulic roller P/N 12552296 Valve Lift (Inlet/Exhaust): 0.480:/0.483" Duration at 0.050" cam lift (Inlet/Exhaust): 204/209 degrees Cylinder Heads: Cast iron round port with 2.07"/1/72" valves and 118 cc open combustion chambers Flywheel: 14" diameter flexplate w/ dual torque converter patten Gross Torque: 515 lb. ft @ 2800 rpm Spark Timing: See tune-up label on truck Fuel: Unleaded premium 92 octaine (R+M/2) 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
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