I need some help to ID a 10 Bolt GM Rear end, that has code DN (Delta Nancy) on the Axle Housing left tube upper,
D N should have an arrow between and indicates the shift the axle was manufactured, Day or Night.
On the right side of the axle housing tube, has the number - 3142, and then another number that is 8780100.
3142 may be the Julian date code which would be the 314th day of 1972 or 1982 or 1992,
Some one has this rear end for sale, and is telling me it is for a GM A-Body '68 - '72, That is is a Posi rear end and has 3:73 gears
If indeed it is a 3:73:1 it would be a chevy rear end, Pontiac didn't use 3.73:1
I am restoring a '69 GTO. Just would like to know if it fits...
If it is from a Chevy A-body it should fit.
I know that '69 GTO takes a 10 bolt rear end, and is supposed to be either 3:90, or 4:33 geared.
In 72 Pontiac offered the GTO with the 3.08:1, 3.23:1, 3.55:1 and 3.90:1 in the 10 bolt, the 3.07:1, 3.31:1, 3.55:1, 3.90:1 and the 4.33:1 was offered in the 12 bolt which was standard with the 455 engine.
The axle gear code for Pontiac should be stamped on the left axle tube. Also this axle may be the 8.5 corporate axle which is also available in 3.73:1.
Can you post a picture of the pumpkin?