Valve Lash for a Grey with a 40 / 80 Cam

[FC427]

Need Help with rocker settings on a Grey with a 40 / 80 cam the motor is in a car and I am just trying to help out another member by setting his rockers so he can get to Summer Nat's no cam card came with the motor I realise that all cam grinders use different lash but if I get a couple of answers it will be a starting point I have not measured the lift or anything else so I am blind at this stage......FC427........

[colt]

FC427, the cam in my grey is a mid range cam, not too big, my clearance is 15 thou inlet & exh.
Colin.

[FC427]

Thanks Colt I seem to remember 18thou I used to run on a 40/ 80 but that was over 30 years ago and so many cams since then and the memory is not what it use to be.........FC427.........