F Schreiber
Senior Member
Offline
I figure my speedo reads higher than it should. I have a BN7 and the Eng, trans and OD unit was swapped out at one time or another. 3000 engine, and I believe i have a 100-6 trans and OD. AEC3174 trans, and 28/1447 OD unit.
So I have an 28/1447 overdrive instead of a 22/3009 and I have the 3.909 rear end. Moss catalog shows different annulus (item 143) and speedometer pinion assemblies ( 168, 169) between those two units. BN2,4,6 is different than the BN7, BT7, BJ7, BJ8. I am figure those parts are what they use to compensate for the different ratio rear ends.
If so can i swap out those items 143, 168, 169 to get my speedo to read correctly and can I swap those parts without swapping out the whole overdrive. Are they interchangeable???? Will And will any of these 100-6 OD and 3000 OD units fit on any of the 100_6 or 3000 transmissions. I know the output will be different if output is different but are they physically interchangeable.
So I have an 28/1447 overdrive instead of a 22/3009 and I have the 3.909 rear end. Moss catalog shows different annulus (item 143) and speedometer pinion assemblies ( 168, 169) between those two units. BN2,4,6 is different than the BN7, BT7, BJ7, BJ8. I am figure those parts are what they use to compensate for the different ratio rear ends.
If so can i swap out those items 143, 168, 169 to get my speedo to read correctly and can I swap those parts without swapping out the whole overdrive. Are they interchangeable???? Will And will any of these 100-6 OD and 3000 OD units fit on any of the 100_6 or 3000 transmissions. I know the output will be different if output is different but are they physically interchangeable.