JamesC

iTrader: (5)

In what year did GM discontinue the gov lock in thirdgens?

JamesC

86blackiroc

iTrader: (12)

I didn't think the Gov-loc type was ever used in a third gen, just the pickups?

89ROC-Z

iTrader: (7)

Umm, what is a "gov lock"?

JamesC

iTrader: (5)

Apparently, in the early years--"perhaps" 82-84, the gov lock, a type of limited slip, was used. A search will no doubt provide more info, should you be interested.

JamesC

vindeezl

iTrader: (2)

aka the Eaton "time bomb"

86blackiroc

iTrader: (12)

Or "gov-bomb". Not all of them blow up though, the unit in my '91 S-10 has not grenaded yet and it's pushing 200K.

primerk5

They can't take a beating. A friend of mine had one in a 78 chevrolet truck lets just say when it came apart he went sideways in an intersection as it slid to a stop. It then broke free. and chiped a tooth on the ring gear.

daveb123

My parts catalog shows 82 & 83 has a cone type LSD that it refers to as "Borg Warner". 84 & later has a traditional clutch plate LSD that it calls "Eaton". I always thought the cone type was crappier, I've occasionally been able to defeat mine & the right rear goes up in smoke.

Toyota h8r

mu friend has a 84 trans am and i had a 83 bird and both had LSD units in them not the gov-bomb. Even my 92 t/a has a clutch type

8t2 z-chev

This is what i have found for posi diffs in early third gens:
-'82 TA 305 c/f auto rear disc:auburn
-'83 z 305 c/f auto drum rear(5-83 mfg):auburn
-'83 z 305 c/f auto rear disc(7-83 mfg):gov-lock