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Is there any difference between the 710 & 712 in the transmission or high low box?

Also who got the new trans that was up for auction on ebay? Jim?

Miles

Trans for 710-712 are the same. Transfer case is lower geared for 712.
As for the TD trans on Ebay, Jim M Got it.

Tranny is the same. The T case is 12% lower in the 712 in both ranges.
710 .88 :1.0 high, 1.69:1.0 low
712 1.0 :1.0 high 1.92:1.0 low
This is off the top of my head.

I would have liked to have that tranny. it was for a 716

Thanks guys, I thought so but couldn't remember for sure. Since I won't be pulling the extra weight that the gearing was lowered to, for the 712 could I switch to the 710 gearing? I haven't decided to do this yet but would like to know if it is a viable option.

Miles

It's been done, and works fine in the ones I've driven.

Profpinz's 712 has a 710 T case.

Thanks Jim and David.

Miles

It has been done here in Europe as well - and in fact the 712 will be able to drive a bit faster with a 710 T case in it. The only draw back is that you will have to shift more often when doing off-road.

David Dunn wrote:I would have liked to have that tranny. it was for a 716

Why, Dave? Do you need more torque for climbing? But, it would be a bit worse on highway.

At the moment, I am happy with the stock tranny and automatic transmission. A lot of torque for climbing, even if fuel consupmtion is 710-like.

Regards,
Ugo

Ugo wrote:

David Dunn wrote:I would have liked to have that tranny. it was for a 716

Why, Dave? Do you need more torque for climbing? But, it would be a bit worse on highway.

Regards,
Ugo

Ugo, I think you missed something, that was a stock 716 tranny. it'd be nice to have spare.

David Dunn wrote: Ugo, I think you missed something, that was a stock 716 tranny. it'd be nice to have spare.

Uh. I have to improve my English ... I understood that you are looking for a tranny with a higher reduction rate for your 716.

Ugo

Ugo
Actually talking to Peter the other day, and we felt a 6 or 7 speed for the Pinz would be nice. It would get rid of some of the "long leg" in the upper gears. A low granny gear, an OD, and closer intermediate gears.... but , you don't need to worry about that with your slush box.

Dave Dunn

The TD tranny is 33% higher in overdrive, but only 25% higher than the gasser's first. That puts the crawler about midway between the stock first and second. Since my W spends most of its time on the freeway/dirt roads, no real heavy offroading, I think I'll like the TD tranny...

Ford has a six speed manual in their trucks that has about the right gearing - 20% overdrive, and a low that is 8% lower - lower low, higher hi, but would it fit? I REALLY wanted a Gear Vendors overdrive so I could spit gears. The numbers looked great, but it's just too long to fit. Oh well.

Jim M.
712W (with EFI and soon to have TD tranny!) and stock 710M

Jim
I had done a OD tranny in a 712M years ago. The ratios were really off, had to use 1st for takeoff more often than not. In town was usually the bottom 3 gears, and downshifted out of 5th for power on the hiway. If I hadn't sold the truck, I would have gone back to the original trans. The OD trans belongs with the TD's T case

Dave Dunn

How hard is it to swap the t-cases?I often think the lower gearing for a 710 would be a plus.The 712 with it's x-tra traction could get by off road with a 710 case and would make it more "roadable ". As I have one of each,and if it was not a real bother,I would like to experiment with some swapping to find out for myself. ..... :idea: Someone get serious about my X-Tra K so I can remove these thoughts from my head! TTFN,Mark