If I am reading the reports correctly the 4-speed automatic which has been setup to handle the LS2 in the 2005 GTO has been designated as the 4L65-E which is replacing the 4L60-E which was used in the 2004 Goat.madx2 said:Just checked Pontiac's site and it's been updated to this:
Custom tailored and performance tuned, the 4-Speed Automatic provides performance that rivals that of the Tremec given a 0 to 60 time of 4.6 seconds.
93-97 Camaro's automatics were quicker than 6-speed cars. Car and Driver tested the theory. Not true in all cars, I'm just saying that on some its quicker. I have a 6-speed, they are more fun.Rhino74 said:The 2005 specs are the same as the 2004 specs, so I suspect they have not updated some of them. That being said, I never really believed the auto would beat out the 6-speed if driven properly. The 05 is lighter and has more torque and hhorsepower, meaning that it should beat the 04's 5.3 0-60 time.
and without running the risk of severe breakage!Steve A said:Ronny Sox used to do pretty well in the Mopars with a 4-Speed.
With a really good run, the manual will probably win, but it is very hard to duplicate it run after run like an automatic will.