I was told the truck was running and driving, but I soon realized this was far from the truth. It ran terrible. I would get up to 10 mph and the carb would sputter, backfire, and buck the whole truck around the neighborhood. I could also see sediment in the fuel filters. I pulled the tank and fuel lines to clean them all out. Rinsed the tank out with some muriatic acid and neutralized it to kill any dormant rust.
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I went through the Holley 4160 carb, ultrasonic cleaned it, and reassembled. Found out someone had RTV’d the metering block instead of using a proper gasket

. I still have some fine tuning to do this weekend, chasing a small off idle hesitation, but it runs much smoother.
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My truck came with the oddball low pinion closed knuckle dana 60 with drum brakes upfront. Parts are not easy to come by and there are no off the shelf disk brake conversion kits. I started looking on marketplace for a 78-79 f250 kingpin high pinion Dana 60. These axles are very sought after by off-road enthusiasts for ground clearance and ability to run 37-44 inch tires. This year range specifically is also a direct bolt on for a highboy. They command a premium, anywhere from 3k-3500 just for a core. I stumbled on a deal for one in OH, had to LTL ship it, but it was well worth the effort.
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