I'm running an old Direct Connection 5 blade clutch fan and stock repro pulleys from 440 Source on my 493 and it runs nice and cool at any speed. I'm running an older factory water pump that has less clearance to the Mancini housing. Later model pumps were designed with more clearance to run hotter for emissions purposes.(just a theory I share with a few other engine guys) Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60