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Chevrolet - LT4 PERFORMANCE CRATE ENGINE KIT | |
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The LT4 Performance Crate Engine Kit has been discontinued by GM. They are no longer available and can not be obtained. This page will remain here for information purposes only. Keys - scperformanceeng, gmperformanceeng, or gmgoodwrencheng for SC, GM, or Goodwrench engines. Use allengine for a complete list of all three. |
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LT-4 PERFORMANCE ENGINE KIT | |
  This engine is discontinued and will remain here for information purposes only. Webmaster 08-04-2000 This “Gen II” design 5.7 “LT4” engine is the high performance version of the small-block that was used in manual transmission versions of the 1996 Corvette. This engine kit includes long-block assembly (block, crankshaft, rods, pistons, steel roller camshaft, lifters, push rods, aluminum cylinder heads, roller rocker arms, painted valve covers, oil pan, aluminum front cover, and balanced hub), plus water pump, 4BBL intake manifold, standard HEI distributor, and balancer. With these parts you can install the engine in any 1967 of older vehicle without using a computer. This engine has the same bell housing bolt pattern, motor mounts and accessoriess bolt holes that all Chevrolet V8’s use. This engine with the new aluminum 4BBL manifold P/N 24502574 produced 335 hp at 5500 rpm. New aluminum cylinder heads have larger ports and valves to increase airflow. The stiffer valve springs, roller rocker arms, and hollow stem valves help to increase rpm maximum over the LT1 engine. A new higher lift camshaft, 10.8:1 compression ratio, rolled and undercut cast iron crankshaft, dual mass front torsional damper, and roller timing chain, make this kit a hot rodder’s dream come true. Technical Note: The water pump, distributor, manifold and torsional damper are not assembled on the long block. LT4 ENGINE SPECIFICATIONS
Part Number: 12371172Torque: 346 lb-ft at 3500 Bore & Stroke: 4.00” x 3.48” Engine Block: Cast iron with four-bolt intermediate main caps Compression Ratio: 10.8:1 Crankshaft: Rolled and undercut cast iron one-piece rear seal Camshaft: Hydraulic with roller tappets Valve Lift (Intake/Exhaust): .476”/.480” Rocker Arm Ratio: 1.6 Cylinder Heads: Cast aluminum with 54.4cc Valve Diameter (Intake/Exhaust): 2.00” x 1.55” Maximum Recommended RPM: 6300 rpm Fuel Requirements: Unleaded premium |
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