Wayne -
My wife and I are leaving at first light tomorrow to pick up a 47 3100.... I just went through this regarding the 235.
My understanding is that all 235s WITH a 4 bolt valve cover and short side cover on the spark plug side are all full pressure engines. If it has a tall side cover with 4 bolt valve cover it is a babbet con rod bearing, low pressure 235. Look for my recent post and thread in the engine section "216 vs 235" or google images for chevy 235 and chevy 216 and look at the valve covers and side covers - you'll see what I mean.
Good luck - we will post pics as soon as we return. Good luck and happy hunting!
John
