2low and manual lockup

Can this be done on a 2006 Dodge 2500 4x4 manual tranny??

sacmarata wrote:


I don't have manual hubs on my '94 Dodge. It's a vacuum actuator kit you can buy or build for any 4X4 with vacuum activated front hubs.

What size gasser was that? I'm considering manual lockup on my 6.0 Chevy with 4L60E as I can't stand the "tow haul" mode.

Another option to the vacuum interrupt is the posi-lok cable actuated unit. It removes the vacuum actuator on the CAD on the front axle and replaces it with a cable with handle in the cab (kinda like a cable actuated choke). Clicky

My '97 was a 350ci/4L60E, so it was pre-tow/haul. A little too much throttle and the TC would just unlock, and it wasn't much extra throttle. I added the switch, selected 3rd on the shifter and once I got up to speed I'd flip the switch to lock the TC earlier and hold it longer. Was also nice to be able to manually select 2nd and lock the TC there on the steeper hills.

I used a TC lockup switch in my 91 Chevy Suburban with 700r4 trans. Love using it. It was a simple thing to add to a 700r4 trans. Never could get one to work in a 93 4l80e trans. Its easier to do in non fully electronic transmissions. I have seen some for newer ones but are very expensive. Bow-Tie Overdrives has some for 4l80e's and Allison transmissions. I think Banks also has some for other transmissions.

I actually removed the front DS one spring and spent the summer pulling with it off. It was sure nice to use 2 low parking the TT.
But manual locking hubs are stupid expensive and have their draw backs; One brand sticks out too far and looks ridiculous, another brand looks stock but isn't as strong as it should be.
Maybe on my next truck.

boogie_4wheel wrote:
Wish I had manual hubs on my Dodge so I could use 2-low, but not spending the money for the conversion. If I had a manual trans on it I would have already installed them. Back in the day on an old Ford I had, I used 2L on it quite often for spotting trailers.

As for a manual TCC lockup switch, I had one in my previous truck ('97 GM gas on a 4L60E). Helped keep my trans temps down on a maxed GCW rig.

I don't have manual hubs on my '94 Dodge. It's a vacuum actuator kit you can buy or build for any 4X4 with vacuum activated front hubs.

What size gasser was that? I'm considering manual lockup on my 6.0 Chevy with 4L60E as I can't stand the "tow haul" mode.

Wish I had manual hubs on my Dodge so I could use 2-low, but not spending the money for the conversion. If I had a manual trans on it I would have already installed them. Back in the day on an old Ford I had, I used 2L on it quite often for spotting trailers.

As for a manual TCC lockup switch, I had one in my previous truck ('97 GM gas on a 4L60E). Helped keep my trans temps down on a maxed GCW rig.