I have a 58 Skyliner that overheat's..It has a 352 that I have rebuilt. I have had the block boiled, A new 4 core radiator, 2 new water pump's & every thermostat made. I have tryed a different gage & sending unit. I have tryed a pusher fan also. I've been told to try a schroud & a recover tank but then it is not original...While at a car show a gentleman with a very nice 59 hardtop told me to block the bypass hose & that would help...Has anyone ever done this? Doe's it work? Any idea's? Thank's Gregg...