Hi, I have a Volvo diff for a project however I don’t know what model car or year it is, it has these numbers on the housing if that is any help

384710

A 17

110972

Thanks for any help 😀

There should be a white label (hidden beneath the undercoating) on the left axle tube

    ramrod thanks for the reply, unfortunately the diff has been stripped back and painted

      You’ll need to remove the cover to find the ratio.

      Can you show a picture of the bottom of the housing?

        Looks like something out of a 1975-1985 244

        Available ratios: 3.31:1, 3.54:1, 3.73:1, 3.90:1, 4.10:1

          ramrod ahh ok, so different to a 240 then, I need to find a couple of these as it looks like they were hacked away with an oxy, also I have to find the correct disks and handbrake pads.

          Also is this normal, when I hold the diff centre I can spin both axles with no load on them, but when I put load on the axles the diff centre will rotate both axles, would it be a LSD by chance?

          Image description

            244=240

            Definitely not LSD

            But, remove the cover to see for yourself

              I have new rotors and pads available and pad pin kits

                ramrod thanks mate, are these diffs rated as being strong compared to a Holden banjo diff? I’m looking at putting it in my HG Ute which has a stock 253 V8 in it, I have to move the leaf spring saddles out another 20mm each side to be in standard place

                • Spac replied to this.

                    Just count the teeth. Put a marker pen line on a tooth then turn it counting as you go.

                    My money is on 39 teeth, and 11 teeth on the pinion (from the 39 & 11 marking). Making it a 3.54, which is close to your estimation.

                    In future there is no need to remove the cover, which is clearly too late here, just lock one axle and turn the pinion until the other axle completes two revolutions while counting the pinion revolutions. i use a tab of masking tape on the pinion/uni joint and on the axle/tyre to keep track of the rotations. Seems you may have done this. I have done it many times and it can be done with the diff in the car, just pop it into neutral and lift one wheel up, it only takes a few minutes.

                      dmc

                      I didn't know that

                      Thanks for the correction

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