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AOD Driven Gear

  • Thread starter Thread starter dcurtis
  • Start date Start date Feb 1, 2009

dcurtis

10 Year Member
Jan 19, 2006
688
7
39
Feb 1, 2009
#1
  • Feb 1, 2009
  • #1
I have an aod tranny in my 91 and am installing some 3.73 gears next week and have been trying to figure out the correct driven gear to get to fix the speedo, as far as I have read it says that my tranny has an 8 tooth drive gear and with 3.73 gears and a 26 inch tire I will need the 23 tooth driven gear, basically I just want to be sure that I do in fact need the 23 tooth driven gear, does any one know?
I ask because all I can find is a 23 tooth that says it is for 410's and a 7 tooth shaft.
Where can I get the correct gear?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,287
17,984
224
Massachusetts
Feb 2, 2009
#2
  • Feb 2, 2009
  • #2
with an AOD, the 23-tooth is what you want.

With a 5-spd, and 4.10's you'd also want a 23-tooth gear.
 

dcurtis

10 Year Member
Jan 19, 2006
688
7
39
Feb 2, 2009
#3
  • Feb 2, 2009
  • #3
Thank ya thank ya
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,287
17,984
224
Massachusetts
Feb 2, 2009
#4
  • Feb 2, 2009
  • #4
Just to clarify for anyone else

90-later AOD is 8-tooth. 89-older is 7 tooth and requires a purple 21-tooth gear
 

monte87

Founding Member
Feb 26, 2001
876
18
49
new york
Feb 2, 2009
#5
  • Feb 2, 2009
  • #5
So say its 4.10's & AOD for a 91, then what?

Mustang5L5 said:
Just to clarify for anyone else

90-later AOD is 8-tooth. 89-older is 7 tooth and requires a purple 21-tooth gear
Click to expand...
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,287
17,984
224
Massachusetts
Feb 2, 2009
#6
  • Feb 2, 2009
  • #6
Then you are screwed because 23-tooth is as high as you can go.

Then you either live with it, or look into a speedometer recalibration box
 

monte87

Founding Member
Feb 26, 2001
876
18
49
new york
Feb 2, 2009
#7
  • Feb 2, 2009
  • #7
Wouldnt that 23 tooth gear-be the white one?

Thanks Ant

Mustang5L5 said:
Then you are screwed because 23-tooth is as high as you can go.

Then you either live with it, or look into a speedometer recalibration box
Click to expand...
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,287
17,984
224
Massachusetts
Feb 2, 2009
#8
  • Feb 2, 2009
  • #8
Yes white is 23-tooth. It's not a Ford part...it's a chrysler part.
 

monte87

Founding Member
Feb 26, 2001
876
18
49
new york
Feb 2, 2009
#9
  • Feb 2, 2009
  • #9
Gotcha!!!! THX
 
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