Phil- thanks for the pics and advice. Actually, my radiator has already been moved back to the rear of the bracket, and has used this long shafted pump ever since I bought it. I bought the cp pump due to it's description on classic parts of fitting later (55 on) 235's in older trucks. The problem isn't the space between the fan and radiator, though. The problem is without the added spacer (3/8") the fan won't clear the harmonic balancer below it, but with the added spacer, the shaft is about 1/4" too short. It isn't long enough to make it all the way through the spacer, thus the fan's center hole is not making contact with the shaft at all. Also, with the spacer removed, the blade and the pulley are in their correct positions on the shaft, but the fan hits the balancer. So it looks to me like CP added a spacer to correct the fan hitting the balancer, but didn't think to add the extra length to the shaft to accommodate it. Sort of a lazy fix, or a mistake on shaft design. I'll post some pics of what I'm talking about when I get out there this morning and work on it some more. But since it's present set up has worked for this long (almost 10 years since I acquired it), I'd rather just keep the pump I"ve got and eat the cp pump. I'll call them up and see if they'll take it back, but classic parts has always had a reputation of debating customers on problems with the "we're right, you're wrong" mentality, so that probably won't get any results. But thanks.
Dave- thanks for the recommendation. I'll check them out.
For right now, I'm just going to go get new thermostat and pump gaskets and put it back together. When I find a pump rebuilder, I'll pull it off and have it redone. Just really disappointed in cp's supposed 'this will fit what you need' ad, which is a mistake. Thanks guys.
Last edited by showme; 09/14/2021 1:57 PM.
