Good News!!! (and a question)

[agrevbuzz]

I'm fairly new to this dangerous addiction of rebuilding old Mopars. Long story short, My '76 dart custom /6 has sat (in various locations) for at least a decade.

I got it running today!!!!!!

Here's the question. Old diffy is shot (or at least I was told so by the mechanic before I parked it for 10 years). Got a "new" one from a valient same size and all.

Should I attempt a rebuild? or just change the oil in the new differential. If oil change, what weight should I use for a 7.25 rear end?

 

[grumpuscreature]

Good old 90 wt gear oil is your friend. Would be interesting to tear the old diff down to see if there really is something wrong with it.

 

[agrevbuzz]

Seriously thinking about it after I get this on the road. When it happened, my wife was in school, a baby on the way and the dart was a "spare car". Needles to say the baby is older the wife is a pharmacist and daddy's putting his car back together again!

 

[70dart]

Well you are getting back to it after a long layoff, great to heat good luck with the build!