Mystery rear end

[68chargerpilot]

I have a 68 charger (yes a second one) and it was "modified" with this mysterious rear end. Any have an idea what it is?

 

[Car Nut]

Do you see it on this picture.

 

[BeepBeepRR]

 

[1967coronet440]

Looks like a 8.25

 

[Cranky]

Need a more of a straight in shot of the back but it looks like a GM 10 bolt to me from that angle....

 

[BeepBeepRR]

Looks like either the GM10 bolt or an 8.25 Mopar. I can make out what I think is a drain plug on the right side.

 

[GTXperience]

A picture straight on and closer would help but it looks like an 8.25 (vs a GM10) to me. What's the BP? Although it's possible to change it, very few people are going to go through the trouble of replacing or filling/redrilling on either an 8.25 or a GM10.

 

[tomlin]

Its hard to tell but it looks like there may be a wrinkle in the rear cover along the bottom. The camera angle is not real clear to pick it out for sure. If it does then it is most likely a 67-72 GM passenger car 10 bolt.

 

[moparmarks]

GM 10 bolt.
Don't see any pinion snubber mounting bosses.

 

[tomlin]

To be more precise I would say 67-74 camaro or nova or their respective clones. It was called a GM 8.25 (if it has the wrinkle in the cover). If the cover is smooth it would be a GM 8.5 likely 75-81 camaro or nova or their respective clones. The 8.5 is a good axle with many options. The 8.25 was so-so with fewer options.

 

[SublimeSixpack]

Here's a GM 10 bolt housing (and cover), looks very similar.

 

[68chargerpilot]

I'll have to get a better picture. Sorry guys. Thanks for all the info though.

 

[Daliant]

Sure looks like an 8.25 to me with the vent tube and cover on the pass side, I don't think GM had that.

 

[Kern Dog]

GM 10 bolt.
Don't see any pinion snubber mounting bosses.

The 71-81 Camaro and Firebird models all had a GM 10 bolt, 8.5" axle. The 70-81 Camaro/Firebird had a body mounted pinion snubber, it was attached to the reinforced pad above the center section.
I agree that this picture isn't clear enough to determine the origin. The wheel lug pattern would really help.
Oh, the GM 10 bolt had a stamping on the RH axle tube about halfway between the diff and brake backing plate. It faced forward and slightly up. It was often a 2 digit code starting with the letter P. I recall a PY being a 3.73 Posi...

 

[mmissile]

Looks like a non-HP application......equals junk.

 

[the mississippi madman]

It's a GM 10.
8.25 has a fill plug on the right side

 

[SublimeSixpack]

Follow through on this thread would have been nice.

 

[68chargerpilot]

I'm not in the same state as my car(Va). I will be there Dec 11. I will get updated pics then in order to solve this once and for all. HopefullyI will relocate the car in the next month.

Follow through on this thread would have been nice.

 

[68chargerpilot]

I'm finally in the same place as my cars. Here are more pics of that mystery rear end.

10 bolts. No filler plug on the back plate.

 

[68chargerpilot]