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Vortec is a trademarked name for a line of gasoline engines for General Motors trucks. The name first appeared in an advertisement for the 1985 model year 4.3 L V6 that used "vortex technology" to create a vortex inside the combustion chamber , creating a better air / fuel atomization. [ 1 ]
The Vortec 6000 or new VortecMAX version is based on the Holden L76 engine, and features variable cam phasing, along with Active Fuel Management. It can be considered the replacement for the Generation III LQ9 engine. It produces 367 hp (274 kW) at 5400 rpm and 375 lb⋅ft (508 N⋅m) at 4400 rpm.
Depending on components and computer module the Vortec 5700 produces 255 hp (190 kW) to 350 hp (261 kW) at 4600 rpm and 330 lb⋅ft (447 N⋅m) to 350 lb⋅ft (475 N⋅m) of torque at 2800 rpm. [ clarification needed ] [ citation needed ] Known as the GEN 1+, the final incarnation of the 1950s-vintage small-block ended production in 2003.
The 4.8L Vortec 4800 V8 is now rated at 285 hp (213 kW) and 295 lb⋅ft (400 N⋅m), while the 5.3L Vortec 5300 V8 is now rated at 295 hp (220 kW) and 330 lb⋅ft (450 N⋅m). New colors for 2004 were Dark Blue Metallic , Silver Birch Metallic , and Sport Red Metallic .
Chevrolet 153 Inline 4 (Chevy II, pre-Iron-Duke - includes the Vortec 3000/181 industrial/marine crate motor) Detroit Diesel V8 6.2L and 6.5L; Duramax V8; Generation III V8s with modifications. These modifications include an additional bolt hole at the top of the pattern, and attachment points for cast oil pans to lower bellhousing extensions ...
Based on the Silverado 1500 Extended Cab with a 6.5' Fleetside box, it features upgrades in the drivetrain and both exterior and interior appearance, and included the 6.0-liter Vortec High-Output (LQ9) V8 rated at 345 hp (257 kW) at 5200 rpm and 380 lb⋅ft (515 N⋅m) of torque at 4000 rpm coupled to a 4L65E four-speed automatic transmission.