My 82 is running a 350/350 with a 4 core radiator out of a 72 chevy p/u go to a local salvage and get a ford taurus electric fan I got them for $5 a piece and they are wicked The mud killed my flex a light. and the ford fan runs a lot harder. I ran exhuast tubing under my truck for coolant lines, although I never fixed it the way I had intended, I have been running it for a long time without any problems. you need to put a valve on the highest point on the engine to bleed out air pockets when filling. Another disadvantage is that my truck now holds over 5 gallons of coolant, so I have to carry a lot of extra water. Will try to post you some pics.
