8 3/4 casting numbers

[Burdar]

I bought a 741 case center section yesterday. The casting numbers are 337. When was it cast?

Thinking about having this powder coated so it stays looking nice. Thoughts?

[ratroaster]

33rd day of 1967.

[Burdar]

That was my first thought until I read an old Moparts post by "6bblgt" where he said 288 = Tuesday, 10/15 ('68)

[ratroaster]

I was going by what my Dave Wise reference material says.  Could it be wrong? Sure it could....I don't understand the year code in that theory though.

[71-440]

Here's an interesting read on rears. Found this awhile ago.

http://www.mopar1.us/875.html

[6bblgt]

does it still have gears in it?  what are the dates on the gears?

[Burdar]

It had 3.91's in it and a junk cone style sure grip so it's been apart before.

Here's a good article on the different cases and their bearing sizes.  This is why I'm not afraid to use the 741 in my application.  Dr Diff thinks it's highly underrated.
http://www.moparts.org/Tech/Archive/axle/1.html

When disassembling the unit, I found that it has a 10 spline pinion.  The only replacement gears for the 741 have 29 spline pinions.  I'll have to find a replacement yoke.  Does anyone have a 29 spline yoke that takes the small 7260 U-joint sitting around?

[RUNCHARGER]

Someone will, I used to have tons of those.

[Gary]

I have a couple of them, and I think I'm only a Sunday afternoon drive away.

[Burdar]

Thanks Gary.  I'm asking around to some local guys.  If I can't come up with anything I'll let you know.