positract rearend
09-03-2018, 07:15 AM
#3
Different Carrier, Ring and Pinion, Shiming for proper lash / contact pattern, Wiring, Switch and enabling it with IDS. Replacing bearings if the unit has significant miles is recommended.
Personally I would just install a Detroit True-Trac if one is available for your axle. I don't think a 34-Spline Unit for the 15+ 8.8HD is available yet.
Personally I would just install a Detroit True-Trac if one is available for your axle. I don't think a 34-Spline Unit for the 15+ 8.8HD is available yet.
The following 3 users liked this post by Gene K:
09-04-2018, 09:41 AM
#4
Senior Member
2wd or 4wd? Swapping the whole axle, or changing the R&P and differential? What type of locker? Which rear end do you have (8.8, 9.75, 8.8HD, etc)?
If you are 4wd, then you have to change the front and rear gears at the same time.
What Gene said is correct for installing the OEM e-locker. Forscan may can be used to enable in lieu of IDS. The switch is a simple install. My concern would be how much wiring is required to tie it all in, could be a plug and play solution or quite an undertaking depending on how much factory wiring is there. The differential carrier is the locker itself in this case. If you go with an auto locker, then no switches to install or IDS to enable.
I don't think the 8.8 or 9.75 have a carrier break (same carrier/locker works for all ratios), so you could get by with a lunchbox locker (replaces spider gears) and OEM open carrier. However, IMO, this isn't a good option when regearing...there's not much money saved and you'll have a weaker locker with worse road manners.
Honestly, unless you are doing a lot of hardcore offroading, the Detroit Trutrac limited slip Gene mentioned would be a great option. I run them in my Jeep and they work very well as long as you keep the tires on the ground. Also, there are clutches to wear out, no additive needed, and no clunky road manners. And cheaper than a selectable locker.
If you are 4wd, then you have to change the front and rear gears at the same time.
What Gene said is correct for installing the OEM e-locker. Forscan may can be used to enable in lieu of IDS. The switch is a simple install. My concern would be how much wiring is required to tie it all in, could be a plug and play solution or quite an undertaking depending on how much factory wiring is there. The differential carrier is the locker itself in this case. If you go with an auto locker, then no switches to install or IDS to enable.
I don't think the 8.8 or 9.75 have a carrier break (same carrier/locker works for all ratios), so you could get by with a lunchbox locker (replaces spider gears) and OEM open carrier. However, IMO, this isn't a good option when regearing...there's not much money saved and you'll have a weaker locker with worse road manners.
Honestly, unless you are doing a lot of hardcore offroading, the Detroit Trutrac limited slip Gene mentioned would be a great option. I run them in my Jeep and they work very well as long as you keep the tires on the ground. Also, there are clutches to wear out, no additive needed, and no clunky road manners. And cheaper than a selectable locker.
09-05-2018, 06:25 AM
#5
I have a 2018 F150 Limited 2 well drive and was concerned with getting my boat out of the water with an open carrier. I did check on the Truetrac and that looks to be the best solution.
Thanks,
GTW
Thanks,
GTW
09-05-2018, 08:38 AM
#6
As long as they make one for your axle, that'll be the best mod you'll ever do to your truck.
