OTR trans in 816

[wcuhillbilly]

Ok, been searching on here for a few days and keep finding hints that someone or a group of someones have successfully installed OTR trannys of the Eaton Fuller family into their MVs.
(disclaimer) I am not looking for speed, just the ability to utilized the axle gearing while trimming RPMs

I have access to a 10spd Eaton/fuller and am considering obtaining it for the someday pile.
I have layed under my new to me truck,(while fixing the parking brake) and noticed that the front driveshaft, the PTO drive shaft and the air cylinder for the remote clutch engagement would possibly be a hinderance for a twin counter shaft tranny....

Any light you sultans of the OD green world can shed on this (AND PICTURES !!!!!) would be most helpful.

also if anyone has successfully added a Jake to the NHC 250.....

 

[73m819]

Ok, been searching on here for a few days and keep finding hints that someone or a group of someones have successfully installed OTR trannys of the Eaton Fuller family into their MVs.
(disclaimer) I am not looking for speed, just the ability to utilized the axle gearing while trimming RPMs

I have access to a 10spd Eaton/fuller and am considering obtaining it for the someday pile.
I have layed under my new to me truck,(while fixing the parking brake) and noticed that the front driveshaft, the PTO drive shaft and the air cylinder for the remote clutch engagement would possibly be a hinderance for a twin counter shaft tranny....

Any light you sultans of the OD green world can shed on this (AND PICTURES !!!!!) would be most helpful.

also if anyone has successfully added a Jake to the NHC 250.....

You are correct on the trans interference, what you need is a OLD spicer 8 or 10 speed, these are narrow boxes, with the split shift on the back, if you find TWO let me know.

The Canadians had ALL there 809s jaked

 

[wcuhillbilly]

Thanks Ron.
any idea of the model numbers on those narrow Spicers? did some digging around this morning and kept coming up with twin counter shaft late model spicers.

 

[m16ty]

You're also going to have to watch out on length also. You don't have a lot of space to work with between the bellhousing and the transfer case.

While I do believe the 5-tons would greatly benefit from better gear selection, looks like it would be quite a job to get it done.