Ratio tag location

C1500 or K1500 ,2wd or 4wd/
THE TRANSMISSION MUST BE EXACTLY THE SAME OR PCM MUST BE REPROGRAMMED
4l80 IS CLASS SERIES OF BOX.
NOT EXACT, EVER. MANY VERSIONS ARE MADE OF THAT SERIES. FOR ALL GM VEH..
even special gear ratios and 4wd /2wd differences

only ford can answer that and to get any valid answer
the alien box 2500 transmission tag must be told to ford.
or go to a tranny shop ask them for a look up
tag or photo the tag in hand.
or get the RPO list for both trucks
see Mxx numbers for tranny.
the 2500 uses at least 6 versions. of box. tranny codes IDs. M30 or MT1 and 4 engines

you do know each engine opted day one the gear ratios can be different. right?
the shop manual on the box shows huge table of variant for series 4L80
the codes are called by GM model codes.
(sub codes those are)_
the OSHD I THINK IS THAT CODE.(random gm 4L60/80 codehere)
I say read your C1500 RPO list see if it is M30 box
and buy , that box and model code matched.
know this too, GM will not have PCM programming for boxed not sold day1 new that C1500/
but do ask them. vast transmission exist for just 1 series.

Go with what is in it. tags on the diff will tell you what you have. If no tags, then pull the plate and get the numbers off the ring gear. You may only need to replace bearings.

If you are talking about gear ratio, there is probably a tag on one of the bolts that holds the inspection plate to the housing. It should tell you the gear ratio and ring gear size. If its not there you can pull that plate off (be sure to have an oil catch pan under it) and look at the ring gear itself. All of that same information will be stamped on the ring gear, on the surface of the gear facing you. You may need to rotate it so you can see the stamp.

Fq3=2.86

You will need to locate the tag on the rear end cover and find out the gear ratio, if theres no tag then you will need the manufactors date on the door, for example 04/05, and also if it got abs, there are three types,4.10 or 3.55 or 3.73. the best way is the tag or pull cover and count the teeth on ring gear and pinion gear and divide the two to get the ratio. goodday, also try to call the dealer parts dept and give them the vin # and they may be able to tell you the type rear end you have,

There is a tag that is bolted on the differential back plate that will give the numbers.

on the transmission you will see a tag attached to it with large letters an numbers. those numbers are the code for the trans matching to the computers set ratio of your transmission. you will need the exact same trans with that code or the check engine light will constantly stay on

Most auto parts stores can tell you from the tag which rear end you are using and the ratio

I presume you're asking if they will interchange?The 616 ASw tag number looks valid,that would be decoded,1996 year model.the 3rd 6 in "616" is the year model,and the ASw looks valid as the actual axle ratio code,which i will have to look up at work,but the second tag,recheck those numbers,i can't make any sense of them.

It physically will fit and bolt up,but there are many different ratio,and drive and driven sprocket tooth counts,different final drive ratios,all monitored by the computer with electronic speed sensors.If the trans from the 95 has a different ratio than the 93,the computer will set gear ratio error codes,and possibly put the trans in a failsafe mode,stuck in 2nd or 3rd gear.On the transmission case,down by where the passenger side axle would go in,is a thin metallic tag,maybe 2"x 3",and it has bar codes,and also a series of numbers and letters.The numbers and letters,large cap,are the final drive gear ratio code.They should match on the two transmissions in question.