In reply to ewanjp:
Topo Escalade en Maurienne by Patrick Col is the most recent guidebook as far as I’m aware (2005) so probs the one you found a link to.
For roadside cragging St Leger is good and Rocher des Amoureux has some good routes too (caveat: have only been down there when I have been climbing 6b max so can’t comment on harder stuff).
The long routes on Croix des Tetes are meant to be very good as are the multi-pitch routes on Grand Chatelard above Aussois. There have been some new routes put up in the vicinity if the lacets de Montvernier area (I think) in the last few years by a couple of the guys at Petzl - pretty sure they are on camptocamp, as are the Croix des Tetes and Gd Chatelard routes above.
In the lower valley (below Modane) you have to accept the fact that the autoroute runs down the valley so any low level cragging comes with associated noise, but from Modane up it is quieter...