Modell TT truck rear axles as circle track quick changes????

I may have totally imagined this but I feel as though I have heard on more than one occasion that Model TT Ford truck axles(the kind that just are two halves bolted together with no banjo center) were used either as quickchanges in some modified form or as just a tough racing axle.
Does anyone know anything about this? I want to do some kind of garage built period tough rear axle for my pre war style hot rod. Any help, details, or reality checks would be appreciated. Thanks --Adam

 

Maybe the guy that knows the answer or has a picture of one is home from work now

 

3/4 Ton ford truck rears were common in the 50's/60's as a non-quick change alternative...I've never seen a TT type rear in an old stock car though...weren't they worm gears?

 

The TT rears were worm drives with very low ratios. The ring gear was made of bronze. There was also an after-market conversion to convert to a two speed unit. The rears were heavy and not conducive to racing. They were better suited to building home-made tractors and off-road vehicles.

 

Thanks for the replies. I guess I was confused

 

search "quick change option"

 

Thankyou 26 Roadster. I am downloading the program so I can open your PDF but judging from the other posts in your thread I think this is the kind of thing I was looking for. I knew someone would have some cool answer for me. Thanks again, --Adam

 

Just to give you an idea how long people were using the later Ford truck rearends in stock cars, we have a '68 Dart that was built around '70-ish (happened to run into the guy who built it) and it has like a '50 Ford truck rearend in it. There's a come-along rusted solid on one side of the rear suspension, too, I don't know if that was somebody's tunng trick or just stuck on there to get the car to the junkyard where we found it.

So I agree, that might be what you were thinking of.

 

The early TT rears were worm gear, but the later ones were the more normal crown and pinion with a ratio around 7:1.

. I believe there was also an optional high speed ge****t taller than 7:1

These are a very large and heavy rear end, as already said more suitable for very large diameter wheels or tractor use.

 

All TT rears that I have seen were worm drive, as was the AA rears for 28 and 29. To my knowledge, the first crown and pinion rears in the heavy Ford trucks were in the 1930 model year.

 

Was not sure of the year, but 1930 onwards sounds about right for the change to crown wheel and pinion. These much longer wheelbase 1.5 ton trucks were still called AA models.