I am attempting to install a Langdon HEI in a 1954 235. After dropping the unit into the block, I notice a 1/4 inch gap between the shoulder of the dist shaft and the block. I am sure I am engaged in the oil pump drive. I am worried that when I tighten the clamp I will be binding the shaft in the block. Anyone else have this problem?
Also, the o-ring sits in the notched groove in the block, but nothing is holding it down. I don't want to proceed if something is wrong.
