Zinc Rich Oil for Flat Tappet Cams

According to my '82 Direct Connection catalog, it was 316 advertised duration and .654 gross lift with .024/.028 lash and a 107 centerline. They weren't using duration at .050 back then... but for a rough comparison, the more common .590 flat-tappet was 312, I believe, and the biggest .620 claimed to be 324 duration.

I had to have it lightly reground mostly to restore lobe taper since not all the lifters would spin. It is now [email protected], .652 gross lift, .014/.014 lash according to Schneider Cams who did the work. (It's installed at 105 ICL). The cam card is at home and I'm out of town so I don't have the overlap etc. handy. Idles lumpily in my 451 at 1000-1100 rpm around 7" Hg.

Anyhow I figure the typical recommendation of 1200-1400 ppm should be OK, unless one of the few racers who have experience with this setup weighs in :)