Whats the difference- LQ4 & LQ9
Straight from Wiki:
LQ4
The Vortec 6000, or LQ4, is a V8 truck engine. It is a bored version of the Vortec 5300. Displacement is 6.0 L (364 in³) from 101.6 mm bore and 92 mm stroke. It is an iron/aluminum (note that 2000 model year engines had cast iron heads) design and produces 300-325 hp (224-242 kW) and 360-370 ft·lb (488-502 N·m). LQ4s are built in Romulus, Michigan and Silao, Mexico.
LQ9
The Vortec HO 6000 or VortecMAX, technically the LQ9, is a special high-output version of the Vortec 6000 V8 truck engine originally designed for Cadillac. This engine was introduced in other truck lines as VortecMAX for 2006. It features high-compression (10:1) flat-top pistons for an extra 10 hp and 10 ft·lb, bringing output to 345 hp (257 kW) and 380 ft·lb (515 N·m). LQ9s are built only in Romulus, Michigan.
LQ4
The Vortec 6000, or LQ4, is a V8 truck engine. It is a bored version of the Vortec 5300. Displacement is 6.0 L (364 in³) from 101.6 mm bore and 92 mm stroke. It is an iron/aluminum (note that 2000 model year engines had cast iron heads) design and produces 300-325 hp (224-242 kW) and 360-370 ft·lb (488-502 N·m). LQ4s are built in Romulus, Michigan and Silao, Mexico.
LQ9
The Vortec HO 6000 or VortecMAX, technically the LQ9, is a special high-output version of the Vortec 6000 V8 truck engine originally designed for Cadillac. This engine was introduced in other truck lines as VortecMAX for 2006. It features high-compression (10:1) flat-top pistons for an extra 10 hp and 10 ft·lb, bringing output to 345 hp (257 kW) and 380 ft·lb (515 N·m). LQ9s are built only in Romulus, Michigan.
