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  1. S

    Need AC help!

    85 stock set up minute emissions. New compressor, new lines, new low pressure switch, no leaks. Compressor is kicking in and out with controls turned to off. Acts like a wiring issue but all stock wires in good condition. Thoughts? Was some emissions piece removed that could be causing this...
  2. S

    AC Questions

    85 c10 original system converted to 134a. Just had it vacuumed down and charged. New compressor, evaporator etc. blows cold but only out of heater vent. Where to start on the vacuum lines for that? Also, I have noticed even with the controls set to off the compressor will cycle. Is that normal...
  3. S

    Before and After

    Been working on this 85 for a year now. Started out as a 2500. Swapped body and drivetrain over to a SWB 1500 frame. Just need a vision and it comes together.
  4. S

    What goes here?

    85 breather on a 350. When I got the truck this was not hooked up. Not sure where it originally ran and am having no luck with "The Google" ;) I'm sure it is emissions related, but need to figure out how to cap it off or something. Thanks,
  5. S

    Another Oil Pressure Question

    I read through the threads and didn't see this issue. 85 with 350. Have the dual oil pressure sensors. I swapped the motor/trans/body from a 2500 frame to a SWB 1500 frame. Oil pressure gauge worked prior. We fired up the motor after the swap and the gauge is all over the place. It jumps from...
  6. S

    I need a donut

    I have a 1985 350/400 out of a 2500 GMC. Running the stock exhaust manifolds with the A.I.R deleted. Also using the stock down pipes as the ole 2500 came factory with true duals. Like a dummy, I pitched the old donut exhaust gaskets on tear down and now I have no idea what size I need to put it...
  7. S

    85 GMC Engine Wiring Questions

    I bought an 85 GMC C25 and am in the process of swapping it all over to a SWB C15 frame. Truck has a 350 "M" with THM400 all original. Questions I have on engine wiring. 1. I found four wires close to the alternator that were previously cut. The look pink/black x2 and 2 solid black wires...
  8. S

    Dash Differences?

    I recently purchased an 85 GMC. I'm coming over from the 76-72 trucks, but grew up in Squares. The dash of this truck has the check engine light in the center between the mph/fuel gauges. I thought this was only an option for diesel trucks, but I guess not. I don't see this dash replacement...

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