Thanks, yes, I have tried the 7 bladed fan, and a flex fan. I didn't see a difference, it still rockets up when you stop. I also tried to use a smaller pully on the water pump to overdrive the pump and fan but the pully touched the mounting bolts. As most of us, I have a collection of part stacking up. Hell, that's the third radiator. When I bought it 7 years ago it had a C-body radiator, I swapped that the correct B-body 22" I bought off e-bay for a couple hundred and spend another couple hundred re-coring that and using the metal two-part shroud. Then I spent even more on the aluminum 22" radiator. So another $600 or $700 in a 26" radiator is hard to swallow. At this rate I will have enough spare parts to finish off a rolling body.