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Stock drive train specs and modding advice
In 99+ cars the stock rear end gears are 3.27s
Pre 99 cars are 2.73s
For an auto tranny the suggested gearing is 4.10s
And for manuals it is 3.73s.
Now remember that in 99+ cars you need to have a chip to recallibrate the speedo. And don’t forget the T-lok for improved traction.
In pre 99 cars gears and t-lok have been proven to take .5 off the ¼ mile. 99+ cars get about .3 on the ¼ mile because they have better gears stock.
Shift kits
From what I have been told stay away from both B&M and Trans-Go shift kits for both the 99+ trannys.
As for pre 99s I was told go with Trans-Go shift kit.
Torque converter
For a 99+ car you want to go with a Stallion 3000 stall. They blow away their competitors.
For a pre 99 car you might want a slightly tighter converter, some thing no higher then 2800 stall.
Transmission Gearing
.....................1st.....2nd.....3rd.....4th.....5th
...........T-5.....3.35...1.93....1.27...1.00....0.73
...........AOD....2.40...1.47....1.00...0.67
(4R70W)AODE..2.84...1.55....1.00...0.70
2005 T-5........3.35...1.99....1.33...1.00....0.68
Written By Michael Welch,
and thanks to Rob for his help
In 99+ cars the stock rear end gears are 3.27s
Pre 99 cars are 2.73s
For an auto tranny the suggested gearing is 4.10s
And for manuals it is 3.73s.
Now remember that in 99+ cars you need to have a chip to recallibrate the speedo. And don’t forget the T-lok for improved traction.
In pre 99 cars gears and t-lok have been proven to take .5 off the ¼ mile. 99+ cars get about .3 on the ¼ mile because they have better gears stock.
Shift kits
From what I have been told stay away from both B&M and Trans-Go shift kits for both the 99+ trannys.
As for pre 99s I was told go with Trans-Go shift kit.
Torque converter
For a 99+ car you want to go with a Stallion 3000 stall. They blow away their competitors.
For a pre 99 car you might want a slightly tighter converter, some thing no higher then 2800 stall.
Transmission Gearing
.....................1st.....2nd.....3rd.....4th.....5th
...........T-5.....3.35...1.93....1.27...1.00....0.73
...........AOD....2.40...1.47....1.00...0.67
(4R70W)AODE..2.84...1.55....1.00...0.70
2005 T-5........3.35...1.99....1.33...1.00....0.68
Written By Michael Welch,
and thanks to Rob for his help