dc8fixer wrote: The only shroud I have is the top piece that bolts to the core support. I have a triple belt pulley on my water pump and a 1 inch fan spacer. The fan blades are almost touching the radiator fins. It is currently pulling serious air thru the radiator.
you still need a full fan shroud on it, I know its pulling air thru but it will pull alot more air thru with a shroud and will pull the air thru from the front of the radiator instead of the side. Even if you have to use a shroud off something else, get a full shroud on it. If your radiator is a 2 row with 1" tubes its plenty of radiator to cool a mild v8.
Another thing you could do is use a mixture of 60/40 if you live where its hot out, meaning 60% water and 40% antifreeze as the glycol in antifreeze holds heat. Redline water wetter works well also. Place in a 180 thermostat and drill a couple of 1/8" holes in the out ring, this will move a little bit of coolant at idle and avoids the big rush of hot coolant when the stat opens , seems to balance out the system a little better, also you wont have air trapped in engine this way.
1972 hatchback, 28,000 orig miles, 427/twin turbo's/6spd/big wheels, lowered down pro touring style-work in progress
1973 vega wagon-under the blue flame knife.