I don't disagree that clearance was part of the issue, but that is the case for most if not all 235 motors, especially using less then new rockers. And the rockers themselves, they were spitting, not dribbling and thus not getting the lubrication required. The other issue of course when using a 59 and up set of rockers on a 58 and earlier block is that as the cam bearing wears, the line gets clogged, or the entire system wears, the pressure can dip just because of the wider clearances and clogged lines. The more restricted 59 and up rockers contribute to the problem. I stick to my guns. Run the correct rocker for the block. Sometimes easy is good.
