I will start out with the background, I have a 235 in my 1948 3600. Obviously not original, but I started doing some checking. The block casting # is 3738307. The number above the starter Is CON4 A228. The number beside the distributor is FI27A. All this points to a January 1958 235.
Now for the real questions, Any idea if this motor has hydraulic lifters? I suspect it does, but do not really want to pull the side cover to see. Secondly, when setting the rocker arm clearance for hydraulic lifters, does it need to be done hot? The valves are noisy, but I think part of the problem is the oil passage is partially plugged as it takes about 2 minutes at idle to get oil out of all the rocker arm weep holes. I want to get all my facts straight before I pull the rocker arm shaft out for cleaning.