OK, this thread is a spin-off of the thread I started on 8” vs 8.8” or 9” rear ends. I KNOW I want to switch from 2.79 to 3.55 gears. I’m not so sure on the posi or limited slip issue. I’ve done some more research now, and I know I don’t want a spool or locker (street drivability issues). Trac-locs seem to have potential clutch-life issues, but the non-clutch units like true-trac or powertrax look cool (& spendy). I think I’d be spending $1,100+ on a non-clutch pumpkin, and slightly less on a trac-loc (like TJ’s although he does offer the true trac option for $200). I am considering spending this, but am starting to wonder if the added cost of a “posi” type unit is worth it at all. I could spend the grand+, but man, I’ve got plenty of to-do’s on the mustang list and I have many other (better?) uses for some of that dough.
So here’s the issue: I know the bang-for-the-buck of the 3.55s will be worth it. But is a posi unit worth the added expense? I won’t be taking the car to the track, and I don’t need to do beautiful twin-streak burnouts. I may make a few stoplight romps here and there, but nothing hard-core. Outside of track drag racing or burnouts where/when would I miss having posi? I’m thinking of just switching to 3.55s and keeping my “uncool” open diff. But I want to hear your arguments to the contrary. In what circumstances have you been really glad you spent the $ for your posi? Or not?
So here’s the issue: I know the bang-for-the-buck of the 3.55s will be worth it. But is a posi unit worth the added expense? I won’t be taking the car to the track, and I don’t need to do beautiful twin-streak burnouts. I may make a few stoplight romps here and there, but nothing hard-core. Outside of track drag racing or burnouts where/when would I miss having posi? I’m thinking of just switching to 3.55s and keeping my “uncool” open diff. But I want to hear your arguments to the contrary. In what circumstances have you been really glad you spent the $ for your posi? Or not?
