My engine (351C-2v) has less than 3K on a stock rebuild and I didn't want to mess with the valve train. This was one of the few mild performance cams I found that would work with stock rate valve springs.
My goodness, that name Chet Herbert brings back memories. I have not heard that name in a long time. I used to buy there "reground" custom cams for my 300's in the late 70's for like $29 !!! They worked well for me. mm