Found this a little later. Thought others like myself might benefit from it.

My00-03
Powertrain
6-speed, close-ratio
Primary Gear Reduction - 1.160
1st gear - 3.133 --- Est speed @ 9000rpm ~ 45mph
2nd gear - 2.045 --- Est speed @ 9000rpm ~ 60mph
3rd gear - 1.481 --- Est speed @ 9000rpm ~ 90mph
4th gear - 1.161 --- Est speed @ 9000rpm ~ 115mph
5th gear - 0.970 --- Est speed @ 9000rpm ~ 135mph
6th gear - 0.810 --- Est speed @ 9000rpm ~ 160mph
Reverse - 2.800
Final Drive - 4.10 with Torque-Sensing Limited-Slip


MY04-05
Powertrain
6-Speed Transmissions Gear Ratios:
Primary Gear Reduction - 1.208
1st gear - 3.133
2nd gear - 2.045 --- Est speed @ 8000rpm ~ 52mph
3rd gear - 1.481
4th gear - 1.161
5th gear - 0.942
6th gear - 0.763
Reverse - 2.800
Final Drive Ratio - 4.100

Has someone done a direct swap on the diff?

 

WTF are you trying to achieve by changing the diff? We dont get it....
Both AP1/AP2 diffs are 4.10.

 

Ok dude.... the diff will not do anything for your ratios. Both AP1 and AP2 have the same ratio.

All the changes are in the transmission.

You will need to change the transmission for the taller 5+6th gear along with the different primary ratio. An AP2 transmission in an AP1 will simulate a 4.27 axle ratio for 1-4 and will be nearly the same for 5&6th.

But you know better than me... good luck with the swap.

 

Thank you for the clarification, I might not be as adept in mechanics as you.

I thought that's the idea about posting.

 

[QUOTE=Jasonoff,May 20 2006, 10:11 PM] You may want to do a little more research because you are 100% wrong

AP1 and AP2 both have an axle ratio of 4.10

The AP2 transmission has a different final drive ratio along with 5 and 6th gear ratio.

 

No worries, its just Jasonoff already told you that changing the diff will not meet your objective.....read 5 posts down....Hes not ad dumb as he looks ...

 

I'm thinking of the swap as it seems my synchro in 2nd is worn. Grinding going from 1 to 2 at 9K is nasty!.

Any good connections for an AP2 tranny?
I've got an ACT pressure plate, clutch disk and lightweight flywheel and I figure I'll do them both at the same time.

 

If you want SOME improvement,get a Comptec diff.with 4.56 gears.

 

AP-2 tranny,maybe ???
And you should get an AP-2 windshield wiper motor,too;I get it,that they are much stronger.!!!