The Speedometer Blues…

[KansasIDI]

Well I am having a terrible time finding the right speedometer gear for my BorgWarner 1345. I have a 1356 transfer case, speedo gears for those are plentiful, and parts for those are much more common. What are the differences in drop angle, and case length? Can I take the 1345 off my truck and put the 1356 on my truck? The 1345 is on my 1986 F250 Diesel, and the 1356 is from a 1989 F150 300 I6. Is it strong enough to handle the torque from my weakling IDI?

 

[IDIBRONCO]

Yes it's strong enough. They also came out behind IDIs and 460s. Yours may be different, but from what I've seen, the 1356 uses a slip yoke while the 1345 uses a bolt on yoke, both on the rear output. I don't know about length differences, but I'd be grabbing a tape measure if it was me.

 

[KansasIDI]

Okay. Yes 1345 is fixed **** where 1356 is in fact slip yoke. I just wanted to make sure that there wasn’t like a light duty version or something.

 

[IDIBRONCO]

Not that I'm aware of. From my research, the 1345 was even used in Rangers. All the same thing.