with your cams the spec data sheet should show max lift at tdc. this is the figure you need to set the cam timing.
you will also need a dial gauge to find true tdc by measuring the top of the piston through the spark plug hole.
a pointer and a ruler on the crank pulley can also be used, longer the better for the pointer.
once bottom end is set to true tdc then adjust cams so you get the max lift at tdc by measuring the position of the valve with the dial gauge while turning the cam shaft with what ever type of vernier pulley you are using lose.
some cams are made so far out that you may need to move the cam chain around the sprocket to get correct timing.
I had a lot of trouble with cams in my x20xev, piper cams were a whole tooth out on inlet and half a tooth on exhaust, newman cams were 3 teeth out on exhaust and 2.5 on inlet!
kent cams were the best at half a tooth on both. its running 286 degree cams and passes mot just with a friendly mot station. yours should breeze mot once set up correctly and you have it mapped for the cams, sound will change to once its mapped, my Vectra had a really deep boomy note after fitting shrick cams and fueling was miles out running a map that was done on Dbilas cams.
think there a guide to setting cams on kent web site or PEC site?
