My first cam on a 107 had a 259-267 duration with a with a 582-603 lift with 1.6 to 1 rockers... 546-566 Lift when I had Factory 273 rockers... Mechanical solid lifters I'm about 11.3 to 1 compression....
The duration and the cam timing make that cam much bigger than any of the cams discussed above. It had a lazy lobe looking at the lift,and an 8 degree spread. I'm betting the recommended lash was at least .028 or so?, not picking on the cam just saying the fact is that is not a street friendly grind at all (especially compared to modern lobes).
I have an ultradyne 247/250 108 ls solid ft cam in my 410 and with 10.5 compression and it idles good at 900 and has a ton of street manners, and even cleans up around 2k with no lugging at all with my overdrive four speed.
