Re: 72 GMC Sierra Grande K25
350sbc and th350 matching numbers to truck. They were both rebuilt a few years before it was parked. It hadn’t been ran in 10 years. Oil change, new spark plugs, battery and glug of chainsaw gas in the carb. Fired right up! I since got the fuel tank back in and hooked up with new rubbers and filter. Needed a new fuel pump. New pump shot gas across the shop, good pressure I would say. It ran great on the tank, little smoky. I’m thinking maybe stuck ring or two? I did spray a bit of pb blaster in the cylinders a few days before I cranked it. I couldn’t run it to long as I had coolant flying out from everywhere. New heater core. Now I have a big hole in the radiator. What’s everyone running for aftermarket radiators?
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