I picked up a d60 and it has 2 date codes?anybody ever seen this?

Date the tubes & center were mated together & then the date of the final assembly with all the parts added.

Thank you , always happy to learn!

its got the green plug

Whats the green plug for?

haven't seen a reason for the plug, but they are usually gone & nearly impossible to locate if one is desired for a restoration

I always wondered about that little green plug was all about. I thought maybe it was to identify what gear was in the rear end like 345, 410.456 via a quick look for that color. Problem is I have never come across another Dana with a different color on it. Last week I did some research for a friend that has an ex Pro Stock Cuda that has un uncut Dana B Body length rear in it and the rear end has the green plug. Any one else has an idea of why there is a green plug and if there were any other colors. I will see what gear came in this rear end and maybe if we can amass enough information some answer can come from every ones information. I know none of the Dana Rear ends have this plug I own. Two of them are 410s, one a 456 and the other 354 now 538.

i have a green plug in a 3.54 dana and a red plug in a 4.10 . both 1969.

Green plug 354 Dana 1969 rear end in my friends car.