It's so easy to look up.
The 926 installed at 1.8" has 109 seat pressure and spring rate of 415 lb per inch. So if your 318 is like mine it has installed height of 1.6" so seat pressure would be 192 lb. sounds too much to me, but what do I know?
The 901 has 101 at 1.6 IH and spring rate 353 lb per inch. I believe board members have used that spring on similar cams successfully.
R.