Since the 24v has quite a bit of torque and the 2wd Sierra 2.9 as standard should have a 3.36:1 diff I wanted to fit such a diff. Luckily I found one from a Granada 2.5 TD. But I wanted to retain the LSD, so I brought the differential to a guy to have a LSD part fitted to it. The guy also cleaned it and painted it. I must say it looks very nice.





Tuesday I started taking the old diff out. Unfortunately some of the driveshaft bolts were very tight, so I broke one of my T45 Torx bits. Eventually they all out without damaging the bolt heads.





I also had a alloy diff mount with a PU bush lying around for a while.



So with fitting the 3.36:1 LSD I also fitted the new diff mount. The diff mount isn't a really nice fit. I had to take out one of the plates and the washer on the top bolt, but still the top bolt hit the arb. In the end I got a "flush fit" kit for it.



In order to make the speedo read correctly, I had to change the speedo cog. With the 3.64 diff I had a 23 teeth blue cog in the gearbox. Since 22 teeth is the lowest number of teeth according to MC I fitted that one to the box.

But after driving it I found out the speedo is underreading, so I had another look in MC and it turns out that there is 21 teeth cog for the Granada, so I ordered that one.