Re: Overheating, tried (almost) everything.
If it still has original radiator, then it is possibly clogged, or partially. My 75 had original radiator and thought was cooling normally till I had AC redone in 2016. Technician found coolant was chugging (so to speak) through the upper radiator hose. I could see it and tell. Not many places will re-core anymore due to the age. Had to replace radiator. Another possibility is fan, clutch, shroud, etc. All these can cause issue. Fan blade should be half blade width in, half out. This I found out from many sources. Hope you find the problem.
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1974 Cheyenne 10 LWB Stock 350 W/HEI /TH350/AC/4 BBL Quadrajet
Mopar by Birth
Chevy by Choice
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