Lsd Diff and what gears?

[ezyb]

Hi guys

I need a new Diff for my VT as my current diff is starting to play up.
My cars mods are: Custom 2 half exhaust with try-y extractors and hi flow cats. OTRCAI and Mafless tune. Car runs a treat but my standard diff cant handle the power and is beginning to clunk.

I was wondering whats a good Diff and gears for my car? i hear ppl sayin that 3:9's are great but bad for highway driving, 3:7's are good but more ppl have been telling me to get 3:46's. So i dont know...i drive the car everyday. Also how much would a new diff and gears normally cost also do you need to get ur speedo recalibrated?

Cheers guys.

[jd biddle]

i had 3.46s went to 3.9 no trouble with hwy driven and it gets up of the mark much Betta now mines a 6 speed as well. more torque as well

[ezyb]

i had 3.46s went to 3.9 no trouble with hwy driven and it gets up of the mark much Betta now mines a 6 speed as well. more torque as well

How much did u pay? did u have to get ur spedo recalibrated aswell?

[Benno25]

You will have to get your speedo recalibrated, however this should take your tuner about 2 minutes (if you have a manual) to do so it shouldn't cost you an arm and a leg. Not sure whether you have to adjust shift points etc with an auto or not when changing diff gears?

Cheers
Benno

[Daz Vx Clubbie]

3.9 is the way to go for an M6. You could even go as far as a 4.11 if you wanted. People can correct me if im wrong but I don't think there is much difference between a 3.9 and 4.11. Revisit your tuner to get the speedo recalibrated, is a 5 sec job.

For a A4 people seem to go for the 3.7. Again revisit your tuner as with a A4 your shift points will need recalibrating too.

Regards,

Daz

[ezyb]

Sorry forgot to mention my car is auto.

Also if i was to replace my current diff with an VT HSV LSD diff. Do i have to get the spedo recalibrated?

Cheers guys

[Daz Vx Clubbie]

Depends if the diff is out of an Auto or not. If it's an auto it'll have the same ratio as what you have now (3.07:1). If the HSV was manual it will have a 3.7:1 diff in it and will need recalibrating.

Check to see whether the diff is coming out of a VT Series 1 or Series 2. If its a Series 2 what I said above will be correct. However if its a series 1 manual diff I have a feeling that will be a different ratio again.

Cheers,

Daz



Sorry forgot to mention my car is auto.

Also if i was to replace my current diff with an VT HSV LSD diff. Do i have to get the spedo recalibrated?

Cheers guys