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[zirk]

How can you identify what diff you have?  Do you have to take the casing off?

Most of the TVP 3.2 Manuals Ive come across had LSD with the standard ratio Paul, so from memory  2600rpm gives 70mph in 5th, next diff ratio up would give 3000 rpm at 70mph in top IIRC. 

Edit, above assumes you still have the calibrated speedo fitted and are running standard 16s.

[P6UL K]

What do you class as the 'standard ratio' Chris?

[Kevin Wood]

What do you class as the 'standard ratio' Chris?

3.7 would have been standard for a 3.0 manual. 3.9 for auto. 3.2 never had a retail manual, of course. I had a feeling most plod LSDs were 3.9, giving a bit more poke at low speeds for the manuals.

However, the best way to decide what you want is to have a look here: http://www.omegaowners.com/forum/index.php?topic=90497.0

[zirk]

What do you class as the 'standard ratio' Chris?

As Kevin says above, 3.7 Manual, 3.9 Auto, pretty much all the Plods Ive played with had LSD with standard diff ratios including, Met Police Traffic, SO16, TVP, Manchester, Merseyside, Wiltshire etc, the only exception I found was South Wales Police, an Unmarked Swansea MV6 Manual was fitted with a 3.9.   

Fairly sure your 3.2 will be 3.7 LSD, although yours is an Estate Paul, so they may have fiddled with it, as said take it for a spin, in 4th a 3.7 at 3000rpm will show 60mph on the Calibrated speedo with standard 16s fitted.

[markrnorton]

are all the diff casings the same size ? ie. 3.7 3.9 4.2 etc
if so, could the CWP set from a 4.2 be fitted to a LSD ?

[PeddyP]

are all the diff casings the same size ? ie. 3.7 3.9 4.2 etc
if so, could the CWP set from a 4.2 be fitted to a LSD ?

Watching this space ^^^ 

[Kevin Wood]

Yes, in principle you could swap the CW&Ps over, but getting the mesh and backlash correct once it's installed in the case is not a simple task, requiring special tools and some experience.

[markrnorton]

^^^^
I have someone who can swap these over, just need an ultra low ratio and LSD
I will investigate further now

thanks