Shorter Diff Ratios

[Tony Perks]

Hi all Just stripped my gearbox for my Autograss project,
it has come with the 3.33 1st Gear and the 1.9.. 2nd but it has the 3.89 diff now i really need something shorter around the 4.6:1 mark is there anything I have seen 5.1 cwps advertised, but from what model?

The best bit about this box was the Diff fitted which is an AP Suretrac( I was told it had a Quaiffe fitted)

Any leads plese point me the right way, should also add I have removed all the other gears except 1st 2nd and Reverse will post up some pics later i forgot to take any yesterday!

 

[frank]

the 5:1 is the straightcut aftermarket/rally one i believe tony, your only option is a 4 speed k10 surely ?
edit, you obviously have the type 30 g/box, so 4 speed sunny

 

[Tony Perks]

if the type 30 is the later big shaft one then i guess i have.

 

[frank]

nice diff tony, looks torsen type eh e15/e16 sunny maybe ? http://www.nissanforums.com/b11-b12-kn13-82-90-chassis/144704-e16-tranny-info.html