aa-fords.com

Hi,

Have just pulled apart the 30/31 diff on the '29 truck I am working on - yes I know it is a real bitsa! The bevel gears are quite pitted over about half the teeth- looks like there may have been water in the diff at some time. Seeing as how I will have to replace the gears, how difficult is it to fit the 5.14 ratio gears in place of the current 6.6 ratio. I did a search on this forum to see if there were any answers but could not find anything - not even sure there are any 5.14 gears available. Any info appreciated.

Thanks

Jeff

For what it worth the same rear end with the 5:14 gears was used in WWII Scout Cars. This is a vehicle that looks like a Half track but has wheels instead of tracks.

I think the ring gear would work but they changed the pinion gear in 1932 and again in late 1934.

Bob

someone correct me if I'm wrong but I think the standard (6.6) and high speed (5.14) gear sets (ring and pinion) are interchangeable. the axel and drive shafts are all the same, you would also need the correct speedometer drive and driven gears, There are high speed rear ends out, they are (were) stamped 7-36 on the lower rear edge of the housing flange, they also had a tag. the standard (6.6) were not stamped.

Hello, another person with a bevel rear end in a 29 truck. Mine is a October truck think it was just when the change was made. But it still has the car front end , also a 4 speed in it. Maybe things got changed a long time ago. Mac...

Yep, mine has the car front end and gets steadily newer as you go to the rear!. 4 speed tranny also. Everything absolutely worn out and corroded, especially the springs, but I'm getting there.

Jeff

Iv'e lots of spare AA parts available if you need them.

more parts

even more parts

but wait there's more

I've got a small collection of parts as well. Alot of worm drive brake components.

Wow, thanks guys, I'll put together a list of what I'm going to be needing and get back to you.

Jeff

Do you have the universal joint for drive shaft to rear end. [worm gear rear end] 6 to 10 spline [ I think thats right.] My e-mail address is 1929oldlady@gmail.com . or 574-221-1475 mine is wor out.

I do not have any 6-10 u-joints at this time.