8 3/4" from a 1/2 Ton P/U or Van For "A" Body

MOPARoldtimer said
"Dana didn't supply D-70's to dodge till 79, someone could have put one in it over time, whats the bom # on the dana"

But how can that be true when even the 1977 FSM covers the Dana (then Spicer) 70 (see page 3-53 of the 1977 FSM)??

"The Dana 70 rear axle was first used in the Dodge W300 in 1958." - Wikipedia.

http://en.wikipedia.org/wiki/Dana_70

Perhaps you're reaching this conclusion because, prior to 1979, it was called the "Spicer 70" diff.??

X2.

Here's pictures to back it up. The wheels aren't stock, but the axles/housings have never been swapped out.

1965 Fargo W300. Dana 70 front and rear.

1966 Dodge W300. Dana 70 front and rear.

1966 Dodge W500 (blue box). Dana 70 front and rear.

My W100 came with 8 3/4 rear, Dana 44 front. 4.10's.