i was wondering my friends posi unit was getting worn and not working the way he wanted it to so he said that he put some more clutches in the rear end and now it acts like a locker.. its actually pretty cool it locks going round corners and makes teh clicking noise just like a locker would well please let me know thanks

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1988 firebird ws6 formula350tpi ascd ram air hood GT AUTO 4th gen spoiler black paint with blue pearl centerline champ 500 16x8 all around potenza 245 50 16 on front and 27x11.5 16 mickey thompson sportsman pros on the rear(real sticky!!) msd 6al box blaster 3 coil accel 8.8 race wires hooker shorty headers hooker cat back system pro shift light A pillar gauge pod and water temp and air/fuel ratio gauges autometer oil pressure gauge b&m mega console shifter vette servo custom ram air system with a 9" K&N cone filter tb coolant bypass slp runners polished plenum and runners 170* thermostat smog pump and a/c delete plus cat delete march underdrive pullies, tpis airfoil cvr high torque starter (love it) aluminum drive shaft
best 1/4 mile run of 14.44@ 96.53
this run is before the new exhaust system new sticky tires coolant by pass smog removal new runners new thermostat and new three core radiator since i would get to the line and be well over 220* aluminum drive shaft and vette servo

 

moving to top hoping for some answers thanks!

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1988 firebird ws6 formula350tpi ascd ram air hood GT AUTO 4th gen spoiler black paint with blue pearl centerline champ 500 16x8 all around potenza 245 50 16 on front and 27x11.5 16 mickey thompson sportsman pros on the rear(real sticky!!) msd 6al box blaster 3 coil accel 8.8 race wires hooker shorty headers hooker cat back system pro shift light A pillar gauge pod and water temp and air/fuel ratio gauges autometer oil pressure gauge b&m mega console shifter vette servo custom ram air system with a 9" K&N cone filter tb coolant bypass slp runners polished plenum and runners 170* thermostat smog pump and a/c delete plus cat delete march underdrive pullies, tpis airfoil cvr high torque starter (love it) aluminum drive shaft
best 1/4 mile run of 14.44@ 96.53
this run is before the new exhaust system new sticky tires coolant by pass smog removal new runners new thermostat and new three core radiator since i would get to the line and be well over 220* aluminum drive shaft and vette servo

 

If it's a posi, it could never be a 'locker' unless you shimmed the clutches too tight... Which would defeat the purpose of the limited slip and seriously decrease the life of the unit (unless he never turns)

The clicking is prolly the rear trying to blow.

Some rebuildable (Not auburn) could be shimmed with some clearence or 0.000 clearence but not much tighter than that. You will recieve much improved lockup at the expense of the rear acting as soggy as a $2 ***** very few miles down the road.

Clicking is NOT normal in a clutch type diff unless he forgot the special limited slip additive.

 

hookin88formula --

Sound's like mine did before the diff went. It will click especially bad in reverse while turning. Made the mistake of replacing everything at the tune of 1050.00 (parts only!!!). If your's goes, I'd recommend going aftermarket. For 2k, you can get a bulletproof 12 bolt that will bolt right up and offer more and cheaper options all around. Spohn Performance as an example . . .

http://www.spohn.net/index.cfm?fusea...t&productid=52

Hope this helps! Don't let go of that '88!!!!

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'88 Formula/305/Ported & Polished TPI
Poly's all around
Accel Super coil/Billet Dist/8.8's/Bosch+4's
Long way to go . . .
Gearing up for 350HO/t56 swap-in over summer.

 

make sure your "friend" has AAA, a cell phone, and a bucket to put the parts in when it goes.

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ICON Motorsports

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