"1/2"heads studs with 30# oil on aluminum heads should not exceed 85 lbs,ft.The normal torque for 1/2 studs and 30# oil is 100 lbs ft.Check with your head MFG.These #s are for grade 8 studs.The lifters can be used with or without pushrod oiling.Cold setting(assuming alum. heads)is -.005 of the recommended setting.Always reset to recommended specs. after warmup. "

Mike