264 GL 1977 3.54:1 Diff type- 1030 or 1031?
 

HI Folks

I've been researching options to upgrade this open diff with LSD

Trying to figure out if its 1030 or 1031 Diff ?

Can you tell visually what diff type ? I think its a 1031 based on the diff fluid capacity i replaced?

Diff Plate have the following stamp.

FABR NR = 14113
Volvo PART NR = 255762
RATIO = 3.54

In TP30039/2 it says 1031 used 3.54 ratio and 1.6 L of final fluid. I definitely used ~1.6 liter when replaced last and does say the same in owners manual.

Found some reference under this url talks about Volvo 260/PRV with LSD on 1031 type diff.

http://people.physics.anu.edu.au/~amh110/Diff_LSD/diff_lsd_volvo_dana.htm.

Attach some pic of the diff and bits.

Much Appreciated.

I would think a 1977 would be a 1030 but its always possible

Some discussion here

http://forums.turbobricks.com/showthread.php?t=164877

but you have probably already read that

Your are right , initially I assumed it would be 1030 being age of the car and the single rib but when i started digging Green book / Car manual and posts on Volvo 2XX LSD , i started to question if it is indeed a 1030 on this 77 264. What made me think of 1031 is the car manual fluid capacity .

Just found this S.A.M site in Sweden that still provides LSD kit for 1031 3.54:1 without to much bespoke solution.

http://www.sambilmode.se/PRODUCTS.AS...NGUAGE=SV#2459

It pity that Diff P/N 255762 doesn't really say diff type in the Volvo Catalogue 240/260 Series - 1978.

I have read the post from turbo brick.