gear change/speedo correction on '93 AOD
 

I am planning on having the 2.73's changed out to some 3.55's in my '93 5.0 LX w/automatic trans. Gears are from a '03 Cobra-no problem using those, right?

Next, to correct the speedo, what is necessary to accomplish that? Will it be within a couple mph in accuracy?

Thanks

Get the speedo gear that goes on the end of your speedo cable. I don't know which one it is for the 3.55's, though. I am pretty sure they still used 8.8 gears in the IRS. Someone else can verify that?

speedo gear
 

I found that a 23 tooth gear is what I need. On another site it was mentioned that these gears don't last too long-anyone have experience with that?

Where is a good source for these speedo cable gears?

As for the ring and pinion gears, the 3.55's are from a 8.8 '03 Cobra-local dealer says they will work fine.

next generation parts will have the gear you need...


www.nextgenerationparts.com

cheap to under 10 bucks. plus shipping.

incorrect link?
 

Thanks for the info, but tried that link but it didn't work. Even tried a search for it w/o any luck.

I checked on the 50resto site for a speedo gear for my '93 AOD and they list a 23 tooth gear for $10.95, but they also had the following listed:
"Owners of 1990-93 automatic equipped cars must use a gear reduction box to correct the speedometer which are available at most transmission shops. "

Has anyone used a gear reduction box, is it necessary or will just using the 23 tooth gear get me back somewhat close to the actual speed?

My bad buddy, here it is...


http://www.yearone.com/welcomepageco...ts/welcome.asp