1992 Borg Warner HD Rear End?
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Junior Member
Joined: May 2007
Posts: 8
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From: Rockford, Illinois
Car: 1992 Heritage Edition Z28
Engine: 350
Transmission: Auto
1992 Borg Warner HD Rear End?
Hello. I need to by the rear brake lines for my 1992 Z/28. The options include knowing whether or not the car has a Borg Warner HD rear axle. How do I determine if I have the Borg Warner rear end or not? Thank you.
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Joined: May 2024
Posts: 22
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From: Northen NJ
Car: 1992 Z28
Engine: 305
Transmission: T-5
Axle/Gears: 3.42
Re: 1992 Borg Warner HD Rear End?
The Borg Warner rear has an 9 bolt cover on it, but your '92 wouldn't have that rear if it still has the one it left the factory with. However, doesn't hurt to physically verify it.
Joined: Oct 2001
Posts: 12,219
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: 1992 Borg Warner HD Rear End?
The 9 bolt has a rubber fill plug on the the diff cover.
Joined: Sep 2005
Posts: 27,893
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: 1992 Borg Warner HD Rear End?
And, ... wait for it ... 9 bolts ... holding the cover on.
You almost certainly don't have that, since it was discontinued after 89. Or maybe you might have the Dana 44 that was an over-the-counter replacement for the rear that DID come in that car.
If the cover has 10 bolts and is round, it's ... a ... wait for it ... 10-bolt; the 7½" GM 10-bolt that your car would certainly have come with. If it has 10 bolts but the cover is ... NOT round, you have one of the 3 or 4 Dana 44s that are out there in the wild.
You almost certainly don't have that, since it was discontinued after 89. Or maybe you might have the Dana 44 that was an over-the-counter replacement for the rear that DID come in that car.
If the cover has 10 bolts and is round, it's ... a ... wait for it ... 10-bolt; the 7½" GM 10-bolt that your car would certainly have come with. If it has 10 bolts but the cover is ... NOT round, you have one of the 3 or 4 Dana 44s that are out there in the wild.
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