Later cars don't have the lower adjuster. Different procedure for fitting one of them (slightly).
By the notch is a number, indicating which cam that notch is for.
How does the install differ on a 2.6? Anything major i need to be aware of? as it stands on my dad's drive now it has all cams and crank locked and ready for belt kit.
Cheers
M
There is something about winding back to 10 degrees BTDC... ...Kevin Wood has done one recently...
On Bob dents cambelt, just fitted the kit as per normal, cranked by hand, and the 2-4-6 bank was timed up perfectly 
Quick tweak on the 1-3-5 bank, and job done.
Makes it a lot easier 
Maria/TB...
I see that makes sense! Quite a lot of sense! So banks 3/4 can never be out from teh crank then, it's only 1/2 that needs the timing.
I take it this was a quick tweak by GM to save time and money.
Thanks guys and gals 
Either that, or we just got lucky

Done a couple of these later ones now, never seems to cause a problem.
If there are no markings on the belt, leaving an extra tooth than you would normally between the crank and tensioner works well for me = stops the cams from being a tooth out after the first rotation.
But.. that's personal opinion only, not to be relied upon
