Chris Bracey Posted February 11, 2020 Report Share Posted February 11, 2020 Hi. Is the diff a different ratio on a overdrive or non overdrive diff? Link to comment Share on other sites More sharing options...
rogerguzzi Posted February 11, 2020 Report Share Posted February 11, 2020 No Roger ps 3.63 - 1 Link to comment Share on other sites More sharing options...
johny Posted February 12, 2020 Report Share Posted February 12, 2020 Chris perhaps youre thinking of the GT6 which was supplied with different ratios for overdrive and non models... Link to comment Share on other sites More sharing options...
Neil Clark Posted February 14, 2020 Report Share Posted February 14, 2020 Is that ratio different to the Mk1 diff ratio? I've just found through disassembly that my Mk1 has a MkIV diff and swing spring. Link to comment Share on other sites More sharing options...
johny Posted February 14, 2020 Report Share Posted February 14, 2020 yes think yours originally had 4.11 while now its a 3.89 and the 1500 was 3.63 (all these are UK specs)... Link to comment Share on other sites More sharing options...
Clive Posted February 14, 2020 Report Share Posted February 14, 2020 3.89 used on overdrive GT6. Which is teh same as mkIV spitfire. Swingspring often retro-fitted (along with the thicker front ARB) to give more predictable handling. Link to comment Share on other sites More sharing options...
Neil Clark Posted February 15, 2020 Report Share Posted February 15, 2020 Thanks. Clive I'll check the thickness of mine. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted February 15, 2020 Report Share Posted February 15, 2020 If you need a replacement ARB, shop around. I think this seller is chancing his arm a bit. For that money I'd expect a car to be still attached. Link to comment Share on other sites More sharing options...
Neil Clark Posted February 15, 2020 Report Share Posted February 15, 2020 Tee Hee! I had a look, they only cost £82.00 brand new from Moss! Link to comment Share on other sites More sharing options...
Pete Lewis Posted February 15, 2020 Report Share Posted February 15, 2020 and £64 from canley classics pete Link to comment Share on other sites More sharing options...
Neil Clark Posted February 15, 2020 Report Share Posted February 15, 2020 Even better Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted February 15, 2020 Report Share Posted February 15, 2020 avoid auction sites always do your homework before you assume its the place of bargains pete Link to comment Share on other sites More sharing options...
Neil Clark Posted February 16, 2020 Report Share Posted February 16, 2020 Have used them with great care ever since I clicked on shoe trees on eBay. And got a shoe tree. The left one. 1 Link to comment Share on other sites More sharing options...
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