[ERA Chas]

With an iron block/ally head combination I have run .016 int., .018 exh cold. Never checked hot lash but I will. Mike LeFevers, who was at Shelby when I bought my heads suggested the cold spec and felt it would open up to about .023 / .025, which was the original cold spec of my Ultradyne cam. Has run fine for many years set this way. I check lash every season but only have to adjust 2 or 3 every 2nd or 3rd year.