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Big Jim

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Posts posted by Big Jim

  1. I did change the fan clutch to the heavy duty version and it seems to be much harder to turn than the standard unit. If this doesn’t work I will check the radiator to see if there is a restriction. Thank you for your reply.

  2. Would it be ok to run a Heavy Duty fan clutch on a 350 small block. I have a new Advance Standard Duty on it now but doesn’t seem to be working. Tend to overheat in a drive thru or a parade or a long light.

  3. I changed the source vacum line up to the tee near the switch and still not opening all the way. I guess it could be a bad actuator or a vacum switch under the the control panel. I was hoping it would be something simple. Maybe I'm not getting enough vacum but everything else seems to be working. Defrost and defog, Heater. The door closes when on heat. I feel like the door needs to open all the way on Max. Any suggestions?

  4. I have another 72 Monte and have replaced all of the under hood AC parts and charges well but not blowing well through upper vents. I pulled Dash pad and Middle vent and see a actuator door that apparently goes to AC box and it will not open all the way no matter where I have the controls are but will close when set on heater. Could this be an actuator gone bad? Everything else seems to work fine.

  5. If your temperature stays within 10 degrees of thermostat your system is in great shape, I used an temp probe to measure mine at operating temp & put in a resistor in line at sender to have it read correctly resistor at radio shack cheap. It does vary at time of heavy traffic etc, but not a fast change.

    Hi lasts. I am having the same issue. I installed a new 3 core Brass and copper radiator, A new fan clutch, new radiator hoses,180 Thermostat, New sending unit and my temp gauge is still reading 210+ We checked with a infrared thermometer and it shows 180. What resistor do I need and does it go on the gauge? My engine is a 350 that has been rebuilt with auto trans. I also noticed this engine has 2 sending units. 1 on each head. We unplugged the passenger side and it didn't change the gauge. Later found it was for TCS for emmisions.

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