Hot Rods Need old sig erson specs

I have 2 sig Erson rollers. one is 1000X for 1 409
second is r990CH
Any help is appreciated.
Region Rat
(Bob)

 

My Erson catalog is 1980's. I am not finding a 990 ch. They show a 990 SB as a flat tappet race only cam, .550 lift 278*@.050 advertised dur 318* valve lash .028-.030 power band 3500-7000+
Nothing on the 1000x

 

Thanks. Got busy. sorry for the late reply. Bob