Norton Gurus- OHC Norton Cam ID help please...

Joined
Jun 28, 2012
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I recently picked up 8 OHC Norton cams, and hopefully, one set will be correct for my 1952 International. My Inter is supposedly a Clubman/TT (has rearset lugs, Manx cams, Racing Mag, RN carb, Bolt-through tank, etc) but I want to build it into a more streetable roadster. I have a few original factory parts manuals but the numbers on the cams appear to be profiles, and I can't find any specs on them anywhere. Here's what I've got:

32.39 IN
32.40 EX
68.93 IN (x2)
63.87 EX (x2)
62.13 EX
Also one unmarked Intake cam with a profile like the the 63.87 EX
 
Some parts lists show some of your numbers.

62.13 is listed as a 1950 Model 30 Ex cam.
The matching inlet cam is a 62.12

Note that 350 inters and manxs have their own sets of cams.
Must be a lot of series of numbers around then ?!

Note that Mr Cohen also asks if anyone knows the meaning of the number codes, so it may forever remain a mystery...
 
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