About 8 or 9 years ago I had Rocker Arm Specialists build a set of roller rockers for the motor I have now in my 56 Customline. I haven't messed with the valve lash adjustment since I got the motor dialed in many years ago. This past weekend I took the car on a 300 mile round trip for a car show. Today I pulled the valve covers and they do seem just slightly loose from the cam card specs. My cam card (Comp Cam) indicates an initial valve lash setting of .012 intake and .014 exhaust, but I thought that for roller rockers you reduce those numbers a bit, but I  can't remember nor can I find in writing what that would be. Should I adjust them to the cam card settings or tighten them up a few thousands?
Thanks,
Rono

  Ron Lane,  Meridian, ID

Ron I've never had roller rockers on a Ford but my GMC 6 which also are shaft mounted would be similar. I would stay with whatever the cam spec calls for. Remember the wider the gap the longer the valve is in contact with the cylinder head seat which cools the valve especially with the exhaust. Good luck. Glad you could run 300 for a show mine today was only 30...

56 Vic, B'Ville 200 MPH Club Member, So Cal.