swapping speedometer gear for T18 Transfer case D DustyParty Jeeper Posts 2 Thanks 0 Location Burlingame, CA Vehicle(s) M38A1, Buick V6, T90, T18, D30,D44, Apr 22, 2020 #1 I changed the axles in my M38 A1 from 5:38 to 4:27. The speedometer is now reading too low. Is there another gear set that can be used to help correct this problem?
I changed the axles in my M38 A1 from 5:38 to 4:27. The speedometer is now reading too low. Is there another gear set that can be used to help correct this problem?