Page 96 of GM Performance Parts 2006 Catalog by GM Parts Direct

WHATS HOT? Crazy torque (512 lb.-ft. only 2800 RPM) 502 cubes Low, low price CRATE ENGINES BIG-BLOCK Big towing power at an incredible value! Nothing makes a towing job easier than 502 cubic inches of big-block torque maker! Our HT (high torque) 502 will give you all of the power you need to move mountains or pull your trailer up over a mountain. The GM Performance Parts HT502 has all of the same great performance characteristics of our other 502 engines, but it has been specifically designed for 1976-and-older trucks that need to tow or work hard. The HT502 is stuffed with a 4.00" forged stroker crankshaft, 4.47" forged aluminum pistons, forged rods, and a roller camshaft. The deep-breathing iron cylinder heads, with their mid-size valves and oval-shaped intake ports, deliver maximum cylinder filling at a low rpm. Working together, this combination provides excellent low-end grunt with 512 lb.-ft. of torque coming in at only 2800 rpm. The HT502 crate engine is delivered complete with an oil pan, valve train, valve covers, timing set, and balancer. You add an intake manifold, carburetor, water pump, starter, and ignition system. All of these parts are available from your local GM Performance Parts dealer. 88890534 HT502 94 HT502 TECH SPECS: Engine type (P/N 88890534): Chevy big-block V-8 Displacement (cu in): 502 Bore x stroke (in): 4.47 x 4.00 Block (P/N 10237292): Cast iron with 4-bolt main caps Crankshaft (P/N 10183723): Forged steel Connecting rods (P/N 10198922): Forged steel, shot peened Pistons (P/N 12533507): Forged aluminum Camshaft type (P/N 12552296): Hydraulic roller Camshaft lift (in): .480 intake .483 exhaust Camshaft duration (@.050 in): 204 intake 209 exhaust Cylinder heads (P/N 12552888): Iron round port; 118 cc chambers Valve size (in): 2.07 intake 1.73 exhaust Compression ratio: 8.75:1 Rocker arms (P/N 12523976): Stamped steel Rocker arm ratio: 1.7:1 Flexplate (P/N 10185034): 14" Recommended fuel: 92 octane Ignition timing: 4 BTDC Maximum rpm: 5500 NOTE: Distributor with melonized steel gear MUST be used with long blocks and partial engines with steel camshafts, or engine damage will occur. GMPP distributor P/N 93440806 is recommended. 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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