Help me ID my trany / also #s on rear end plate 2170 ?

[brigond]

I found  #s on the trany. The trany looks new and its aluminum. These are  the #s  I found.......
6c 155-485 or the last # may be 80 or 60 or 65 I'm pretty sure its 85 though.

I know my rear is an 8-3/4 and I'm trying to find out the gear ratio . I found a tag held together by 2 screws This tag is not under one of the hold down bolts , its a seperate tag    ..... I will post the number shortly I   forgot it as I am writing this

post.

The # on the tag , on the rear  says....... 2170 . does this number have anything to do with a gear ratio ?

I forgot to add ...for my 1971 charger  SE 383

[John_Kunkel]

What kind of transmission? Standard or auto? Where did you find the number?

If you found the number on a raised pad, 6c 155-485 would be the partial VIN of a '76 or '86 car built at the Jefferson plant. An auto trans will have the part number stamped in the pan rail on the drivers side.

[brigond]

Yes john, its an auto. The stamping is on a raised pad on the passenger side. It appears to be all aluminum.
I would like to know what it is and if it will be sufficient for the current 383 and any possible future performance  upgrades to my engine.

[John_Kunkel]

Again, look on the pan rail on the drivers side, the part number will be stamped there and will tell you the exact application.

[brigond]

Thanks for the picture. I was looking in the wrong place . Thought I read it was on the passenger side.

It was hidden from my view  by the exhaust. I'm working in a tight spot right now. I was able to use one of those cameras with a long flexible cable. Bought it cheap on amizon, worth the investment.

Anyway, here's the #s  PK 4028412 5374 1295

I couldn't find info on these #s when searching 1971 charger transmission.

[brigond]

Hey  John , thanks again for the picture and I was able to find out on line that its a 727 from a 76, 400 ,2 bbl.

[71 SE3834V]

Using this date calculator, http://maxwedge.com/articles/10k.php the date (2nd #) works out to Wed, April 14, 1976 which coincides w/the info you have.