I have an 88 GT with some mods. My problem is when I try to launch over 2300 RPM my right rear tire spins hard. Any suggestions on a good but cheap posi I should get? A friend told me to avoid limited slip/ trac loc diffs. I appreciate any ideas
The Ford diff is not that bad. Probably just needs a rebuild. You can get the rebuild fairly cheap and if you are good you can put an extra clutch plate in there and get more lock. I have seen the old Ford traction lock take some serious power.
Rebuild your trac loc and mod it to lock up tighter with additional clutch packs and arranging them as per instructions on this site. I did this and am very happy with the results.
unless you are making enough power to carry the front wheels off the line, there is nothing wrong with a modified trac-lok.
they are cheap, they are rebuildable and if you take care of them they will last hundreds of runs and thousands of street miles.
blipping the throttle in the burn box is a great way to force it to load and unload, wearing them quickly.
otherwise, drive normally.