69 Grand Prix Posi
Posted: Wed Dec 17, 2014 12:29 pm
Jim,
I took this 10 bolt posi rear as part of a package. It is pitted, and I can't find an axle stamp anywhere. I've looked on the driver's, passenger's, top, front, rear...I was told it was out of a 69 Grand Prix. It has flattened axle tubes, I read somewhere that is correct. Why do they flatten the axle tube? There is a D stamped on the driver's brake drum, nothing else. What I do have is the casting no. 9795082, which I could barely make out. It has four ribs, a 4 pinion posi, and 2.93 gears - 41/14 GM stamp on the ring gear. Both axles turn in the same direction. This could be a medium duty, or a heavy duty with forged axles. I looked for the large N cast on the housing, it is not there, but I see what looks like an engraved N in the same area. Hard to see with the pitting, maybe my eyes playing tricks on me. Did they ever engrave it, or just the large cast N? I read that 2.93 would not be installed in the nodular housing with forged axles, so this is probably the gray iron medium duty 4 pinion. Is there a way to identify the axles as forged or not? There is not a lot of info on these, and a lot of variation in these old 10 bolts. This could be good for someone with a GTO maybe, as I think I read that a lot of them came with a 2 pinion posi. I'd trust your opinion on this. Thanks
I took this 10 bolt posi rear as part of a package. It is pitted, and I can't find an axle stamp anywhere. I've looked on the driver's, passenger's, top, front, rear...I was told it was out of a 69 Grand Prix. It has flattened axle tubes, I read somewhere that is correct. Why do they flatten the axle tube? There is a D stamped on the driver's brake drum, nothing else. What I do have is the casting no. 9795082, which I could barely make out. It has four ribs, a 4 pinion posi, and 2.93 gears - 41/14 GM stamp on the ring gear. Both axles turn in the same direction. This could be a medium duty, or a heavy duty with forged axles. I looked for the large N cast on the housing, it is not there, but I see what looks like an engraved N in the same area. Hard to see with the pitting, maybe my eyes playing tricks on me. Did they ever engrave it, or just the large cast N? I read that 2.93 would not be installed in the nodular housing with forged axles, so this is probably the gray iron medium duty 4 pinion. Is there a way to identify the axles as forged or not? There is not a lot of info on these, and a lot of variation in these old 10 bolts. This could be good for someone with a GTO maybe, as I think I read that a lot of them came with a 2 pinion posi. I'd trust your opinion on this. Thanks