OK [i] am done with the solid roller BULL$$HIT. As some predicted. Not sure of the cause but wiped almost every lobe. Rollers are fine but they ate into my cam. Looking for a simillar cam but hyd roller that will give me approx 550 hp at the crank. My motor is a 408 with afr 205 fully cnc heads, vic jr intake with quick fuel 850dbl pumper. My previous cam had .600 lift with duration around 250s @.050. Looking for any suggestion on experience with other cams. I would prefer an off the shelf cam to speed up down time. I will also be changing out my valve springs and pushrods to match the new hyd cam. Anyone use the MUTHA Thumper cam from comp? Thanks for any advice. Berm