. . . . I'm sure i've read somewhere (but can't remember where . . . ) that a new 'box was £3000 ?

It doesn't help not knowing though, does it !

 Where do you go after one of these . . . ?

£3k for a brand new box sounds about right, but £3k to rebuild an old box is expensive

RRPhil wrote:

Following up on Steve’s reference to Valve Body Express, I’ve asked their UK distributor (https://www.automaticchoice.com/uk_contact.php) for a quote on a L322 GM 5L40-E valve block fitted with Sonnax kits – I’ll let you know when I receive a response.

Phil

Thanks, Phil! That is exactly the name I couldn't remember the other day. I have them in the bookmarks of my home PC - saved me the time.

They also have an address in the NL for those on the mainland. 
RRC 2Dr, RRC 4Dr,
P38, and 2 L322s
(wife thinks I'm nuts - prob right, too)

Hi all, thanks for your input. I have got car booked into "Beds Auto-transmisions" tomorrow. Their website looks good and after visiting them today I am glad to report that they have all the tooling to repair the valve block using Sonnax parts and have two flow machines for testing them. They were very helpful and friendly and had three RR's and one BMW X5 in whilst I was there. They showed me what they were doing on these and being a mechanic I was very impressed. The price quoted was also very reasonable as well. They offer 18months warranty on it which is very reassuring. Once done I will let you know what it's like.
Cheers
Dean The Best 4x4 by far, so long as you have deep pockets.

Hi Dean,

Interested to know how you got on?

SKOT 2006 4.2 SC
2019 Renault Zoe Dynamique Nav

Cant grumble on 18 months warranty they obviously have confidence in there workmanship onto no6 Range Rover

Everyone needs a hobby

The jury is still out at the moment. The car seems to be good but I have not yet done any motorway driving. They ask for a check up after 500 miles which was carried out last week (all good) and then a gearbox service including oil change at 6000 miles or 6 months (est. £250 cost). With this additional cost the total will be less than £2500 in total for the job. They have changed everything and reamed the valve block fitting sonnex valves. So all in all I think that I am pleased.  The Best 4x4 by far, so long as you have deep pockets.