The Vortec 5300 is equipped with dish pistons that are made of cast aluminum alloy and powdered metal I-beam style connecting rods. The engine used a cast-iron cylinder block with 111.76 mm (4.40 in) of bore spacing. lb) of peak torque.Ī 96.0 mm (3.78 in) cylinder bore and 92.0 mm (3.62 in) piston stroke give the LM7 engine a total of 5.3 L (325 CID) of displacement.From 2000 to 2003 the engine made 290 PS (213 kW 285 HP) of output power and a torque rating is 441 N.In 1999 it produced 273 PS (201 kW 270 HP) of peak horsepower and 427 N.The GM / Chevy LM7 Vortec 5.3 engine produced: The engine is equipped with 78.0 mm (3.07 in) 3-bolts mounted throttle body. This engine used a sequential fuel injection system and “Coil-Near-Plugs” ignition system and pressurized lubricating system with a wet sump. The GM / Chevy LM7 engine has a V8 cast-iron block, two aluminum heads with 16 overhead valves (OHV), and a single camshaft. This engine is a longer-stroked by 9.0 mm (0.35 in) version of the LR4 Vortec 4800. Catharines, Ontario, USA and Romulus, Michigan, USA. The GM / Chevy LM7 (VIN code “T”) is a Generation III small block V8 Vortec truck engine The engine was manufactured at St. in) natural aspirated V8 four-stroke liquid-cooled internal combustion gasoline engine, manufactured by General Motors since 1999 to 2007.
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