robster94gt
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- Joined
- Jun 22, 2014
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Thanks for responses so far guys - So I'm looking to put in 3.73s. There's a place here that I think knows what they're doing. We don't have much in the way of shops that are experienced with Mustangs.
I'll look up the bearings and axle seals - would that add a lot of extra labour?
Oh, that's unfortunate- how do you recalibrate? And for the phone, GPS- do mean just use that for speedo?A 23 tooth (white) is the largest tooth count available. It works with 3.55 gears. Nothing else out there for 3.73 and up. So your speedo would be off (high?) and the only way to correct it is with a calibrator. Or use a gps with your phone? Or change the drive gear on the trans main shaft if T5.
I had used a Ford Racing "speed dial"with my AODE trans, 4.10 gear and 23 tooth. It worked fine. Just recently did a T5 swap so installed a 6 tooth black drive gear.
Thanks, but its manualif its automatic
go with the brown plastic gear
Nobody takes the tail housing off the trans to change the tail shaft gear so it’s never correct above 3.55’sLMR.com has a speedo gear calculator on its website
There’s definitely truth there. I swapped the plastic tranny gears a few times and the speedo was still never 100% accurate. Best is 2-3mph off. So, to get my true/actual speed I use the Speedometer app on my iPhone and adjust accordingly.Nobody takes the tail housing off the trans to change the tail shaft gear so it’s never correct above 3.55’s