AOD + 3.73s... what speedo gear?

ReverendDexter · August 3rd, 2009, 10:07 PM

Forgive me, I'm failing at the internet.

Can't seem to find what speedo gear I need for an AOD when going to 3.73s.

Thanks, guys.

89Domindart · August 3rd, 2009, 10:24 PM

I think Ive got a link.

89Domindart · August 3rd, 2009, 10:32 PM

couldnt find it. sorry.

ReverendDexter · August 3rd, 2009, 10:35 PM

Thanks anyway, man.

I seem to remember coming across a page that said with an AOD the best you could do was get the 3.55 gear and live with the speedo being off, but I refuse to believe it.

89Domindart · August 3rd, 2009, 10:37 PM

I have it out of my LRS.com catalog,

what year?

89Domindart · August 3rd, 2009, 10:41 PM

Originally Posted by ReverendDexter

Thanks anyway, man.

I seem to remember coming across a page that said with an AOD the best you could do was get the 3.55 gear and live with the speedo being off, but I refuse to believe it.

Well curiously, yes, in my catalog, for cars 1990-93, the highest they list is 3.55.

If your car is a 1984-89 auto:

3.27=19 tooth
355=20
373=21
410=23

ReverendDexter · August 3rd, 2009, 10:41 PM

Originally Posted by 89Domindart

I have it out of my LRS.com catalog,

what year?

1990

dblzroracin · August 4th, 2009, 08:57 AM

Here is a few links that should help you decide. Looks like the 23 tooth is listed for a 90 AOD with 3.55 & that is the highest tooth gear you can get so that should get you the closest with a 3.73 but still wont be 100% accurate.

Mustang Forums at StangNet - View Single Post - speedo gear calculator

Speedometer Info, FFR FAQ
http://www.ddperformance.com/PDF/SpeedoChart.pdf
mustang speedo gear chart - Google Search

August 3rd, 2009, 10:07 PM	#1
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,233 iTrader: 0 reviews	AOD + 3.73s... what speedo gear? Forgive me, I'm failing at the internet. Can't seem to find what speedo gear I need for an AOD when going to 3.73s. Thanks, guys. __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\ Buy my Bronco, special deal for MM folks

August 3rd, 2009, 10:24 PM	#2
89Domindart Enthusiast 89mustanglx5.0 Join Date: Jul 2006 Location: smyrna ga Posts: 791 Blog Entries: 4 iTrader: 0 reviews	I think Ive got a link. __________________ 89 5.0 for sale! in the classifieds section

August 3rd, 2009, 10:32 PM	#3
89Domindart Enthusiast 89mustanglx5.0 Join Date: Jul 2006 Location: smyrna ga Posts: 791 Blog Entries: 4 iTrader: 0 reviews	couldnt find it. sorry. __________________ 89 5.0 for sale! in the classifieds section

August 3rd, 2009, 10:35 PM	#4
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,233 iTrader: 0 reviews	Thanks anyway, man. I seem to remember coming across a page that said with an AOD the best you could do was get the 3.55 gear and live with the speedo being off, but I refuse to believe it. __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\ Buy my Bronco, special deal for MM folks

August 3rd, 2009, 10:37 PM	#5
89Domindart Enthusiast 89mustanglx5.0 Join Date: Jul 2006 Location: smyrna ga Posts: 791 Blog Entries: 4 iTrader: 0 reviews	I have it out of my LRS.com catalog, what year? __________________ 89 5.0 for sale! in the classifieds section

August 4th, 2009, 08:57 AM	#8
dblzroracin Regular 92 Mustang GT vert Join Date: Aug 2005 Location: Memphis, TN Posts: 142 iTrader: 0 reviews	Here is a few links that should help you decide. Looks like the 23 tooth is listed for a 90 AOD with 3.55 & that is the highest tooth gear you can get so that should get you the closest with a 3.73 but still wont be 100% accurate. Mustang Forums at StangNet - View Single Post - speedo gear calculator Speedometer Info, FFR FAQ http://www.ddperformance.com/PDF/SpeedoChart.pdf mustang speedo gear chart - Google Search __________________ www.bbandtracing.com Last edited by dblzroracin; August 4th, 2009 at 09:03 AM.

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