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  1. Stormhawk

    TH400 Kick Down Solenoid

    Gents, I just did a trans service on my TH 400 and replaced the kickdown solenoid, vacuum modulator, gasket, fluid and filter. The truck didn't have proper kick down prior to the service and still doesn't after replacing all the parts although it s Up shifts and down shifts perfectly otherwise...
  2. Stormhawk

    Mystery Connector

    Gents, Any idea what this connector could be for? It’s on the passenger side below the radiator. The wire is spliced back into the wiring harness in the bumper and I can’t trace it. Truck is an 83 K20 350/TH400. I know this truck was used in the past to tow a trailer/5th wheel, and there was...
  3. Stormhawk

    Accelerator Cable Adjustment

    Dumb question here gents, ho does a guy remove the slack from the accelerator cable? truck is an 83 K20, 350/TH400 and I have about an inch and a half of slack in the accelerator cable that keeps me from getting to WOT because the pedal hits the floorboard. Short of replacing the cable, is there...
  4. Stormhawk

    More Washer Pump Questions

    Gents, I need to find a cost effective fix for my washer pump. Truck is an '83 K20 with the multi speed wiper switch on the dash. The wipers work great, but my washer fluid pump doesn't pump. I've seen replacement units that replace both the wiper motor and washer pump, but I need to fix this...
  5. Stormhawk

    Paint Source for 1983 K20

    Gents, This spring I plan on repainting the roof on my 83' K20 as there's not a trace of paint left, and is nothing but rust and primer. The build sticker in the glove box is missing, but I believe my truck is "mystic silver" & "midnight black" two tone. The roof is silver, and I need to find a...
  6. Stormhawk

    Choke Issues

    So starting about a week ago my truck (83 K20 350/TH400) has been having severe cold starting issues. It will literally not stay running unless I manually hit the choke kick off, start it, then run back under the hood and hold the choke plate all the way open. If I bump the throttle and let...
  7. Stormhawk

    Bench Seat Tracks

    so I’ve been prepping the cab on my 83’ K20 for new carpet and speaker wiring. After pulling the bench seat and the remains of the old carpet and padding I was inspecting the underside of my seat and noticed that the driver side slider track is broken. The seat had never slid properly, so this...
  8. Stormhawk

    Throttle lever actuator

    Good afternoon gents, As the weather has been getting colder I’ve been doing some fine tuning of the choke on my truck and getting it dialed in for winter. I’ve also been redoing a lot of the vacuum lines and removing any smog and emissions junk. To that end, can somebody tell me what this thing...
  9. Stormhawk

    Voltage Gauge

    Evening gents, Last week I rebuilt my gauge cluster with all new bulbs, bulb sockets, printed circuit and oil & temp gauges. Everything is working but yesterday my voltage gauge suddenly pegged at 18+ volt and stays there. Prior to rebuilding the cluster the gauge worked fine, reading between...
  10. Stormhawk

    Damaged Mystery Component

    Can somebody identify this part and tell me how the vacuum lines are supposed to be routed? I was changing out the thermostat and one of the vacuum barbs broke off. It was attached to the thermostat housing, 1983 K20 350CID.
  11. Stormhawk

    Starter Wiring

    Good morning gents, I have an odd question. Lately my 83 K20 will struggle to start. The starter sometimes sounds very strong and sometimes struggles to turn the engine or even engage. I went under it yesterday and saw that the wiring from the ignition switch was melted and the terminal for the...
  12. Stormhawk

    New Member in Eastern Montana

    What’s happening guys. New to the site and new to square bodies. I’m kind of a shade tree mechanic, not a professional by any means and I’m learning as I go with these trucks. My ride is an ‘83 K20 which I rescued from a farm in North Dakota. I nicknamed her “Rolling Thunder” since it had...

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