mark newman Posted August 21, 2013 Share Posted August 21, 2013 Does any one know the ratio of a large case uk diff is it 3.26 . just trying to sort out, if I need a new diff for the th400 box for my drag car, Quote Link to comment Share on other sites More sharing options...
James Posted August 21, 2013 Share Posted August 21, 2013 The UK spec was a B03B wasn't it? If so then yeah, they were 3.266:1 with the bigger (220mm) crown wheel. Quote Link to comment Share on other sites More sharing options...
Homer Posted August 21, 2013 Share Posted August 21, 2013 UK Spec 6spd 3.133 UK Spec auto 3.769 (Not sure if the auto's also had the big diff...) *Edited, the first one was wrong* Quote Link to comment Share on other sites More sharing options...
Littler Posted August 21, 2013 Share Posted August 21, 2013 The uk auto diff is the B04D which is a 3.538 ratio and big case Quote Link to comment Share on other sites More sharing options...
listy Posted August 21, 2013 Share Posted August 21, 2013 Ooooooh, battle of the Mods.....who is right?! Quote Link to comment Share on other sites More sharing options...
Littler Posted August 21, 2013 Share Posted August 21, 2013 Ooooooh, battle of the Mods.....who is right?! I've checked 3 chassis plates of uk auto's including the car I got my uk auto big case diff from and they all say that on the chassis plate Quote Link to comment Share on other sites More sharing options...
Kaan W Posted August 21, 2013 Share Posted August 21, 2013 Yep UK auto has the big diff same as mine as I was looking into swapping mine for a UK 6 speed diff once. Quote Link to comment Share on other sites More sharing options...
Homer Posted August 21, 2013 Share Posted August 21, 2013 Ah, nice one Adam, I better update my gear ratio spread sheet Quote Link to comment Share on other sites More sharing options...
Littler Posted August 21, 2013 Share Posted August 21, 2013 Ah, nice one Adam, I better update my gear ratio spread sheet Quote Link to comment Share on other sites More sharing options...
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