TTMotorsports
Red Skull Member
So I picked up a 89 F350 7.3L IDI non turbo truck and water pump and coolant was flushed out 5K miles ago. Needless to say it overheated on the way home and would continue to do so unless I left the radiator cap loose. When it was running with cap on and at temp I didn't see any leaks BUT with this being a C6 no Overdrive and 4.10 rear gears at 60mph it's at 2800 rpm which i feel is a little too high for this motor. What should i look into to see what the possible problem could be. With it cold the water in radiator isn't circulating but when up to temp it is so I feel the thermostat is working correctly. I drove it 95 miles before it overheated and the coolant was full before my trip home. Also the coolant on the shitty Ford gauge was at the N in normal and then 75 miles after driving went to O then to the R and then it spiked the gauge and shut it down when I discovered it was now out of coolant. No smoke or anything out the tailpipe either. Thanks