Re: Newbie help with gears and exhaust
I had 3.73s in the stock rear end of my 99 GT, when I traded for the 03 Cobra IRS it had 3.55s, there was only a tiny difference, and I believe my gas mileage might have improved a bit. I was happy with the trade off. I loved the IRS rear end too. Handled great. Personally I dont' think I would want to change the gear ratio in my 06 v6, might like a traction lock differential though, everything I have done and plan to do to my 06 will help gas mileage, not hurt it one bit.
Rick Kilpatrick, AAS Automotive Systems Tech, Alamance Community College, Class of 99. 06 5 speed manual Mustang with Pony pkg : GT Mac Mufflers, true duals with one custom pipe. 2.5" system. GT bumper cover, all installed March 7&8 2006. AFE Stage 1 CAI, Motoblue Underdrive pulley, GT aluminum shifter knob, honeycomb rear blackout panel,and dash kit installed. Roush hood scoop and side window louvers installed. SS taillight trim has been installed, new alum. GT steering wheel installed.