For those of you using hi reving car derived engines you will be looking for a lower axle ratio than is easily available from the Sierra range. The Scorpio shaped Ganarda can help you out.

This chart may be of use ....

http://www.fordscorpio.co.uk/mt75.htm

This might be better, the other site link might not work for you all....

http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=Granny%20diff%20ratios.JPG

http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=grannyvin.gif

They are very heavy though!

[Edited on 9-4-05 by phelpsa]

Not really that much more than a Sierra one.

Lighter than a Scooby one I think... and easier to fit as it bolts up where the Sierra one did.

According to http://www.dpcars.net the scooby one is lighter than the sierra ones.

Adam

presumably these are the 7.5" difs? so wouldn't fit a car already built to use a 7" dif without severe modification of diff mounts?!

Ned.

I fitted a new rear subframe to a Freeloader recently, I could hold the axle and subframe in place with one arm while tightening the bolts with the other. A gem of a diff, the driveshafts look really light as well
Rescued attachment FreeloaderAxle.jpg

Ok, if you say so .... have 2 Sierra difs here and 2 Granny ones, either or bolt straight up to the mounts I've made, must admit to there being no height problems in my design.

Freelander difs are light, not sure what ratios are available though. Know they can be suited to BEC but what about CEC???