You need a 55 2nd design & later pump, no the same as your 216 or early 235. Unless you have another hose above the heater hose on the pump either 1 or 2 port will do, plug the unused fitting.


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022