How to tell if cams are obd0 or obd1

is there a marking on them or a part number? this is for obd0 and obd1 ls stock cams. can i take a set of dial calipers and measure how round the lobes are on them and find specs. i have obd0’s in the car and i have another set sitting around that i think are obd1’s but im not sure.

Yes I would like to know this also but as for the 92-93 obd1 i dont know if they are any different or that much off thats its not worth the time. For the 94-95 obd1 ls cams i believe they are more mild if not that the camgears and also on the 96+ obd2 ls cams i am sure they are same or lobes a bit better? anyone help us out here thanks

i looked at acuraoemparts.com and 90-95 ls’s all have the same part number. 96 up the pr4 in the part number is replaced with a p75. still doesn’t help to much since there is no part number on the cams themselves anyway.

yea its hard to find the specs on them but i am sure the lobes and lift dur are a lil different. If its proven so i would go ahead and throw some 96+ ls cams in myself.