Oooohhhh .............I have an age old question that I'll bet you can answer! Literally about 21 years ago I remember something happening that I still to this day do not understand. When I was in college we lived close to this "good ol' boy" who sometimes did some backyard mechanic stuff. I had a 1979 Buick Regal with a 301 4V and 200 Metric Trans (obviously it had an open diff rear end...yes ..for sure ...2.73's and all). I was in his yard one time trying to drive it up onto some ramps and couldn't get enough traction in the gravel lot to make it up. He said "put it in 1st gear ...it puts more torque to the rear end". Knowing that it was an automatic and started out in 1st gear by default anyway, I was puzzled by his instruction. None the less, I pulled the old 3 speed automatic lever down into "1" and feathered the throttle ....the car climbed right up the ramp! To this day I have never understood this ...but always forgot to pursue "why????". So now I finally remember to ask in an appropriate venue. So ....why on Earth did my old 3 speed automatic have a posi-effect on an open differential when the trans lever was placed into "L1".??????????? I'm telling you ...this was not my imagination ...it was a NIGHT AND DAY effect!!!!
2005 LJ, NSG-370 6-spd (close-ratio), 3.73's, three tops incl. custom Sunrider-Safari top, 38"x22" hardtop sunroof, OME 2.5", JKS 1.25 BL/1.0 MML, seats 2"^, 285/75/16 Duratracs, Ion 171's (16x8), Alpine CDE135-BT/KTP-445/Polk521Db/650Db, full soft/hard doors, Harley L.Stms, "I swear my Jeep is staying stock"