Camshaft ID markings

[DSilvaSport]

Hi,

If I suspect that the cams may have been changed on an engine, where would I need to look for any identifying marks? They're in the engine, in the car. atm. Previous owner had no clue etc. Car has lots of mods.

I've got a couple of photos but I can't really tell even if they look the same.

Standard Williams
w1 8.jpg

unsure of
w2 2.jpg

I don't have a dial gauge but am planning to get one so this could be a good excuse and just measure the lift to be sure?

[DSilvaSport]

The end face? or still on the shaft but at one end?

[16v_paddy]

Remove distributor & look at the end of the cam there, if there's a number or anything stamped into it then they're deffo aftermarket cams, if no markings they're standard

[DSilvaSport]

There are no numbers stamped on but there are some markings that look like they have been scored on..arrowed. not too clear tho.
10-feb 001edit.JPG

[zmaster2k]

HOW MUCH SILICONE SEALANT!?

[16v_paddy]

Well that is a bit of a mystery then, think the only thing to do now is get busy with some fancy measuring device to see what they are