can anyone help identify this rear axle?
has these # on the tag
DM-T
9HA
50 8 . 7 311A
and heres a few pics






i was told its a 9, then again that its not a 9in
im needin a 9in for my monte carlo, yeah chevrolet............
im already on my 3rd rear in her , but its the stock 7.5 axle....
im pushing just over 430hp, and need sumthing to withstand the small block, and future BBc 5speed conversion
i figuers you guys would be the ones to ask, since my other forums are gm & monte carlo clubs, if its not a 9 in what is it, and how durable would it be?

any help please, im no ford guy, and know nothing about em... nothing at all...
thanks
david

 

Looks like a 9 to me.

 

i was told it could be 8 3/4.....
what the difference?
it looks to be a 9 to me too, but this link says it has a 8 3/4 ring gear.....
http://www.kevinstang.com/Ninecase.htm


so now im like....what the hell??????

 

8 3/4 will still be stronger than your current 7.5. I thought the 8 3/4 was mopar anyways?

 

im not sure, just tryin to figure out what it is, before i make any decisions

 

Looks like a 9" out of a Ford pickup. Spring perches are on top of the housing. Pass cars are on bottom of the housing.

 

yea, i talked with a buddy of mine in canada last night, and we both came to the conclusion that its a
WDM-T Ford Pickup '63-'78 F-100 3.50 9 in NL 28 spline

, but it seems as ford has 2 different 9in rears, one with a 9in ring gear, other with a 8 3/4, both the same and all, but just a smaller gear.......

Here is an example tag of a 9 inch that isn't quite up to the full measure,it is a 3.50 ratio, but followed by that are the numbers 8.7 which denote that this carrier is sporting a ring gear of an actual 8 3/4 inch diameter.This one is off a 1970 Bronco, built 3rd week of April 1970.This would have been a 28 spline unit when checked in manual.







hese two gears are the same ratio- 3.00, but one is only 8 3/ 4” diameter, the other a true 9”.When gear is installed in the case, a true 9" ring gear will have very little clearance between housing and large gear (most noticable at bottom), while an 8 3/4" setup will have almost enough room to put your finger tips into between gear and case (but don't due it- it can hurt).Don't feel slighted if you find you only have an 8 3/4" setup, they are plenty strong, Ford used them behind the HiPo 289 applications in many Mustangs and others.




http://www.maliburacing.com/ford_9_i..._nine_inch.htm
all info found on this link..........