USMC205 Posted June 9, 2020 Share Posted June 9, 2020 (edited) 2001 RD688 Dump- I’ve been battling overheating when pulling a good hill for a year or so now, I’ve just learned to take it easy but even then it still comes close. From what I can tell, the radiators are about the same in most of the RD’s regardless of the engine. I would think there would be a larger or upgraded one for the 460 since I’m putting more fuel and air to it. I’m going to pull it soon and have it flow tested. Any suggestions on an aftermarket or better one? Radiator is clean, no boost leaks, thermostat changed, viscous fan seems to be working and water pump is pumping (from what I can tell). Anybody have any suggestions? Edited June 9, 2020 by USMC205 Correction Quote Link to comment Share on other sites More sharing options...
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