ZR-1 LT-5 This Chevrolet LT5 V8 engine (5.7 liter - 350 cubic inch), has an all aluminum block and cylinder heads, 4 overhead camshafts and 32 valves.  It is one of only 3,049 manufactured, for the 1990 ZR-1 Corvette. The ZF 6-speed transmission, accompanying this power-plant, is specific to the ZR-1 and is unlike those placed behind L98, LT1 or LT4 engines...  The difference being the bellhousing length and the input shaft length. Complete 'change-over', this engine and transmission package comes with of all the accessories:  fan assembly, water pump, air conditioning pump and hoses, smog pump, power steering pump, alternator, air cleaner assembly, fuel pump, fuel line, throttle cable, tuned-port fuel injection, electronic control module (ECM), wiring harness and sensors, distributor, exhaust manifolds, y-pipe, catalytic converter, 'dual mass' flywheel with clutch assembly, slave and master cylinders, transmission shifter assembly, driveline.     Some LT5 History...  Engine design was a cooperation between General Motors and Lotus.  And, because of the small volume of LT5 engines, GM went outside their own production facilities, to find someone to build the LT5.  Ultimately, Mercury Marine was chosen, because of their reputation in building aluminum engines. More ZR-1 LT5 Trivia...  On March 1st & 2nd, 1990, on a 7.712-mile oval owned by Firestone Tire, near Fort Stockton, TX, three 'World Speed Records' were set, using a ZR-1 Corvette w/LT5 engine:  The 24-hour top-speed endurance record @ 175.885 mph, the 5,000 kilometer record @ 175.710 mph and the 5,000 mile record @ 173.791. back to performance home