WilkesyMB6 Posted May 23, 2011 Share Posted May 23, 2011 I have a S80 box then one day i will fit to my car. What i want to know is how do you tell what final drive is it? People have said count the cogs but who can you tell the difference between a 4.4 and a 4.7 Also if it is a 4.4 would i be best off swapping my final drive from my S9B? Link to comment Share on other sites More sharing options...
Grant Posted May 23, 2011 Share Posted May 23, 2011 No mate the s9b is only 4.2..I think im right in saying that the s80 was 4.4 in all trims except the 98 spec?? Im not sure though.. Also dont know how you could tell..sorry couldnt be much help Link to comment Share on other sites More sharing options...
johngreen537 Posted May 23, 2011 Share Posted May 23, 2011 Measuring the gears is the only way mate.Think the S80 will be wasted without the FD TBH though. If you do masses of motorway miles then I'd consider it, but otherwise, the S80 is wicked Link to comment Share on other sites More sharing options...
WilkesyMB6 Posted May 23, 2011 Author Share Posted May 23, 2011 Yeah 96 specs are 4.4 and 98 are 4.7 Link to comment Share on other sites More sharing options...
weetec Posted May 23, 2011 Share Posted May 23, 2011 96 spec are 66 teeth around crown gear.98 spec are 67 teeth around crown gear.its the biggest gear inside the box...like your man above says, if you do a lot of motorway miles dont think its economical..!..LSD E3D or LSD N3E stamped on casing dictates its a 98 spec....E3D is UK and N3E is import...i dont know the 96 spec stamps.the barcode thing dont tell much....apparently it was a production line thing so they knew which tranny to install to which engine. Link to comment Share on other sites More sharing options...
WilkesyMB6 Posted May 23, 2011 Author Share Posted May 23, 2011 I dont do a lot of motorway miles, and tbh i dont care so much about economy lol. Cool thanks for the info, i will have to count them and see what it is Link to comment Share on other sites More sharing options...
SteveMB6 Posted May 23, 2011 Share Posted May 23, 2011 98 spec is what u want, best for acceleration. Link to comment Share on other sites More sharing options...
johngreen537 Posted May 24, 2011 Share Posted May 24, 2011 If you don't care about economy, keep the FD as it is.If you've got the 98 spec, even better as Steve and Naz said mate, but, if you've got a 96 spec, I wouldn't spent the money to go looking for one. To buy it on it's own.... I wouldn't spend that much!There's been a fair few requests lately for the S9B too mate, so good chance you'll pass your's on pretty quickly too! Link to comment Share on other sites More sharing options...
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