• In 4 low, I get about 10 feet and do not want to go any further (it will but seems like something will break or explode). I can only equate this to that if feels like I am increasing pressure on the brakes.

• The same in 4 hi but it takes about 20 feet

• It does it in a straight line

• It does it off road, in fact, I did not expect that and poped it in 4 low to climb over a steep burm, the ground was forest/rock/small logs. Got ot the top and felt the binding and before I got to the point where I could stop, there was a loud bang. I thought right at that moment that I blew up my trasfercase. Turns out that the t-case popped out of gear but I am sure it would not have done this if there was not another problem.

• In show and gravel, it feels VERY disconnected where before it seemed sure footed and more “stuck” to the surface.

• It does it only with the hubs engaged.

• Used to work fine and did NOT do this

• Its bone stock with no mods. 1987 extended cab 4x4 truck.

• There have been no changes or modifications except having the tranny rebuilt by a pro shop, and it worked fine afterward. No new tires, no mechanical issues related to the drive train etc…

• The tires are the same and all with with the correct pressure

• I’ve crawled under the truck (not on jacks) and looked at the drive train and manipulated the axils and drive shafts and found nothing obviously wrong

• Considering the symptoms, I can only come to the conclusion that the front tires are spinning different rpms than the back and unless some wack job with too much time on his hands came out late one night and swapped my gears, I am not sure how that is possible.
•
• So, I can only think there is something else afoot. So I’d like to start the troubleshooting right from the beginning and do it in order. I'm stumped and losing my hair for scratching it in contemplation