another post changing rear from a 3.50 to 3.91 in mach1 with 408 stroker automatic have traction loc now would a locker be better for street or should i stay with posi. also who do you guys like to buy this rear from. what company thanks again.
If what you have now works, I'd stay with it instead of ponying up for the 400 or more bucks for a locker unit. They work fine, some are more noisy than others (detroit locker), but they are more durable than a standard posi from what I've read. If you're primary use is street, stay with what you have.
Currie's folks are really good at customer service and the phone help is super. Bought some stuff from them and some axles from another place and think Currie is as good as it gets.
Currie staffer says the trac-loc will stand up to abuse with the billet clutch cover. (See 9" article on this site.) The locker is more durable (no clutches) but a bit clunky and noisy. For street use, if you already own a trac-loc, rebuild it and run it.
When I get down to the shop in the morning, I will see what we have in the way of trac 3rd members (3:50 / 3:91). I decided to go with the spool this time (but keeping a section incase want to go on a run)
Just N of the US / Canadian border and 40 miles E of Vancouver (20 minutes from Mission Raceway)
I called down to the shop and Doug thinks he still has a complete centre section that had just been setup. I will check in the afternoon.