Grenade-loc.....

[dieseltech]

Well the pin got pulled on the grenade-loc yesterday on my way back from Oshawa. Luckly i caught it before it completley went off. Ring and pinion are ok just the left side gear and the gear for the governor. I believe these trucks came with 28 spline axles (10 bolt) and an 8.5" ring? I have to replace the carrier and was wondering what to replace it with. I have heard of guys pulling the carriers out of the 90-94 impallas but are they a irect fit to the 73-87 10 bolt that resides in our trucks. What all would you guys recommend?

Diesel

[76stepsidechevy]

I just went with an eaton posi in the 12 bolt I put together for my truck. Nice setup but it was about 500 bucks. It depends what you want to spend, you could probably rebuild that for quite a bit less. Some of the big cars did have 8.5 10 bolts so robbing a carrier from one of them may be an option, just have to make sure its the correct carrier for your gear ratio.

[INSIDIOUS '86]

Looks like the real problem you had was moisture and rust. Your fluid looks like liquid rust. This is prob why your rear diff met its demise
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[ont_guy_38]

That year of impala could have a 8.5 rear end in it and yes it would be a direct fit.I put a posi unit out of a 70ish camaro in mine , way better then the gov locks they put in the truck rear ends but ya a 8.5 car or truck is all interchangable as 76 has mentioned above

[hatzie]

Your pictures look almost like a modern Auburn locking diff unit.
They don't look like a G80 Eaton Gov-Lock.
The 10bolt G80 Gov-Locks have a pair of weights on rods that look like this when they grenade.





The water, mud, and rust slurry didn't help anything.

[dieseltech]

Originally Posted by hatzie

Your pictures look almost like a modern Auburn locking diff unit.
They don't look like a G80 Eaton Gov-Lock.
The 10bolt G80 Gov-Locks have a pair of weights on rods that look like this when they grenade.





The water, mud, and rust slurry didn't help anything.

No its a g80 for sure. the governor is just on the other side.... side gears are missing a bunch of teeth..... ya oil not so good