Just bought a 355, and I found the cam card. At the top of the card someone wrote F18/1
The cam grind # is SB 280/288 F8.
The cam serial # is H1817
Duration at .050 is 247/255
Gross valve lift 525/540
valve lash is .026
Does anyone know anything about this cam, or is anyone currently running this cam? If you are, how does this cam perform? Thanks

anyone?

Contact UDHarold who was UltraDyne - http://www.chevelles.com/forums/member.php?u=12507

Sounds like one of their normal solid flat tappet lobes. I'll look at one of my can cards to see if the F8 doesn't mean a 108 LS. The LS and intake centerline usually are on the cam card.

Their cams perform pretty well. I had a 288/292 solid in one of my Pontiac 400s that pulled well to 7000.