<Li> 1977--1983 3.0 litre air - cooled flat - six </Li> <Li> 1984--1989 3.2 litre air - cooled flat - six </Li> <Li> 1990--1998 3.6 litre air - cooled flat - six </Li> <Ul> <Li> 1998--2001 3387 cc 300 PS (221 kW; 296 bhp) 350 N ⋅ m (260 lbf ⋅ ft) water - cooled flat - six (VarioCam) </Li> <Li> 1999--2004 3600 cc 420 PS (309 kW; 414 bhp) 560 N ⋅ m (410 lbf ⋅ ft) water cooled flat - six twin turbo (Turbo) </Li> <Li> 1999--2001 3600 cc 360 PS (265 kW; 355 bhp) 370 N ⋅ m (270 lbf ⋅ ft) water - cooled flat six (GT3) </Li> <Li> 2000--2003 3600 cc 462 PS (340 kW; 456 bhp) 620 N ⋅ m (460 lbf ⋅ ft) water cooled flat - six twin turbo (GT2) </Li> <Li> 2002--2004 3596 cc 320 PS (235 kW; 316 bhp) 370 N ⋅ m (270 lbf ⋅ ft) water - cooled flat - six (VarioCam Plus) </Li> <Li> 2004--2005 3600 cc 450 PS (331 kW; 444 bhp) 620 N ⋅ m (460 lbf ⋅ ft) water cooled flat - six twin turbo (Turbo S) </Li> <Li> 2004--2005 3600 cc 381 PS (280 kW; 376 bhp) 385 N ⋅ m (284 lbf ⋅ ft) water - cooled flat six (GT3) </Li> <Li> 2004--2005 3600 cc 483 PS (355 kW; 476 bhp) 640 N ⋅ m (470 lbf ⋅ ft) water cooled flat - six twin turbo (GT2) </Li> </Ul>

Which porsche used a 3.0 litre four cylinder engine