The LS1 was rated at 350 hp (260 kW) and 365 lb·ft (495 N·m) since 2001 (LS6 Intake), 1997-2000 350 lb·ft (470 N·m) in North America, depending on the application. The LS1 was used in the Corvette from 97-04. It was also used in GM F-Body cars with a rating of 305HP - 325HP. In Australia, continuous modifications were made to the LS1 engine throughout its lifetime, reaching 382 bhp (285 kW) in the HSV's YII series, and a Callaway modified version named "C4B" was fitted to HSV GTS models producing 402 bhp (300 kW).
Holley HP EFI &Harness for use with mechanical cable throttle bodys includes AIT sensor relays for electric fans & fuel pump. Harness is 5 wire hook up to chassis (12v+,ignition, tach, fuel pump , electric fan