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  1. K

    Fast Idle Solenoid and TRC Question

    Question for anyone with an early 80s 350 M-code engine and air conditioning. My 83 3/4 ton with 350 M-code has the throttle return control setup, which is supposed to prevent backfires, etc., when letting up on the gas quickly under heavy load. The TRC has a switch on the valve cover, vacuum...
  2. K

    Radio Connector Question

    Hello, what vintage is this style of radio connector and does someone sell an adapter between this style and the three 4-pin connector setup?
  3. K

    AC Vacuum Supply Adapter

    What's the part number for the adapter fitting that connects the small diameter supply hose for the HVAC system? Something is needed to connect the tiny line to the larger rubber supply line coming from engine and cruise control vacuum hose. Thanks for the help.
  4. K

    OEM "Original Equipment Remanufactured" company - any good?

    Recently got a brake booster off of ebay that was listed as being remanufactured by Cardone but the only labeling on it is for "OEM". Anyone heard of this company and are they any good at remanufacturing brake parts?
  5. K

    Steering Gearbox Differences

    Hello, what are the differences between a 2WD and 4WD power steering gearbox for early 80s CK trucks, if any? The 1979-84 PC lists different part numbers, so I'm assuming something is different between the two gearboxes. Thanks for the help.
  6. K

    AC Line Clips and Hose Placement

    Two questions...could anyone post engine bay photos of a 1980s truck with AC showing original hose/line placement? I'm adding AC to my 1983 GMC and have the lines but want to make sure I'm running them correctly. This leads to my next question, does anyone reproduce the clips for holding the...
  7. K

    USA1 Vinyl Dye - Actually Dye or Paint?

    Hello, has anyone used this product from USA1 and can confirm it's actually a dye that will penetrate the vinyl as opposed to a paint, such as what SEM has, that will coat the surface? Looking to recolor a dash pad and interior plastic trim for my project and looking at coloring options. Thanks...
  8. K

    Gordon Auto Parts?

    I've come across some new fenders and inner fenders made by Gordon Auto Parts, Taiwan. Has anyone heard of these to know if they will fit decent without much issue? These are local and new...trying to order from AMD or other suppliers is pretty expensive for shipping. Thanks for the help.
  9. K

    Rear AC Port Plug

    Does anyone have a PN for NAPA or elsewhere for a fitting to plug the port for a rear AC line? It would be for the fitting in the hard line from condenser to receiver/drier. See photos. Thought I'd check here first before taking line in and having someone fumble through parts book for a while.
  10. K

    Unknown AC Line ID

    Does anyone know if this line is from a squarebody and if so what year/model. Found it with some other parts and not sure what it fits. Fittings are large (I think low pressure side) size.
  11. K

    Aftermarket Slider Window

    Hello, looking for help on how to disassemble a sliding rear window like this. Not sure of manufacturer. I was hoping that at least sliding glass pieces could come out easily for cleaning, but don't want to break anything. Frame is riveted together. Thanks for any help.
  12. K

    73-80 vs 81-87 Seat Cover Question

    Does anyone know if a seat cover made for a 73-80 bench seat will work on a 81-87 seat frame? The vinyl covered seat in my 83 GMC project has the stitching that matches the 73-80 style, but the hinge covers are 81-87. I'm guessing it's original but not sure. I prefer the stitching style from...
  13. K

    LMC Truck Interior Parts - Color Matching Question

    I'm wondering if anyone has used the "red" seat covers, sunvisors, and door panels from LMC truck to know: 1) Does the "red" match between these parts? 2) Is there a SEM vinyl/plastic paint that will match the LMC "red" color of these parts? LMC sells a Colorbond coating that is red, but I've...
  14. K

    1983 AC Lines

    Hello, I didn't want to hijack the other thread about AC lines, so here goes. I've got a 1983 GMC with a 350 and the old A6 compressor. Looking for part numbers for the AC lines from compressor to condenser/evaporator and from condenser to evaporator. I don't have original lines, as I'm adding...
  15. K

    Non-AC to AC Firewall Conversion

    Hello, I'm wondering if anyone has converted a non-AC cab to allow mounting of an original AC/heater box? I have the firewall from an 85 truck that had AC (rest of it was rusted out) that I can use to graft onto my 83 non-AC cab. Has anyone done such a graft and could provide some insight into...
  16. K

    Replacement Panels - All Created Equal - Yes or No?

    I need to order a couple of body rust repair panels and looking for opinions on the common suppliers: LMC, USA1, Brothers (Holley), etc. Are there any that should be avoided because of fit or quality? Need the cab/floor support pieces for under the drivers side floor plus maybe some other misc...
  17. K

    Cab Removal Questions

    Getting to the stage in my project where I need to remove the cab from frame and get it on a rotisserie, which is the style that would (on a car) mount to the front and rear frame mounts on the underside of the body. Figure I can just shorten the tube between the rotisserie uprights and mount to...
  18. K

    Wanted Cruise Control Rod/Link

    Looking for the rod/link that goes from the cruise control vacuum servo to quadrajet, for mid 80s 350 sbc, appears to need to be around 8 to 8.5 inches in total length. Not sure if they made that link that long, but the approx 7 inch long link that I got at some point (not original) is too short.
  19. K

    PS Pump Differences

    Hello, just wondering if there are any noticeable differences between power steering pumps used on a 1987 3/4 ton 4x4 (350 V8) compared to a pump used on an 83 3/4 ton 4x4 (350 V8)? Looks like the 1983 pump has PN 7839797 and the 1987 is 26003927. I have the 87 pump and would like to use it on...
  20. K

    DELETE

    Looking for 2 groove pulley (press on) for Saginaw steering pump. Used with air conditioning. 5.75 pulley diameter. PNs 14084343, 14023174 or 354325.
  21. K

    AC Conversion Questions

    Hey folks, converting the old R12 system to R134a and I've searched a lot on this site and had some of my questions answered, but have these two remaining. 1. Orifice tube. It's normally suggested to replace the tube. If I look in the ACDelco online catalog, I see several orifice tubes that are...
  22. K

    TRC Actuator and Air Conditioning Solenoid Question

    I have a 1983 3/4 ton with 350 V8 and heavy duty emissions that has the throttle return control (TRC) system with a vacuum actuator at the carb. I want to add air conditioning to the truck, which would mean adding the AC solenoid to the carb to increase engine speed above idle when AC is on. I...
  23. K

    Heartthrob 4WD Dual Exhaust

    Merry Christmas everyone! Anyone installed a Heartthrob manifold back dual exhaust on a 4WD truck with the wavy-style crossmember? I think they started using that crossmember in 1987, a little different than the "W" crossmember used on 1985-86. Maybe I'm trying to do something that's not...
  24. K

    Saginaw Steering Gear Rebuild - Special Tools?

    Forgive me if I'm beating a dead horse but couldn't seem to find similar threads...I'm preparing to rebuild a steering gear from an 87 3/4-ton 4x4 and wondering how many special tools are actually needed for the process? The Shop Manual shows a bunch of J-number special tools used to remove...
  25. K

    81-83 vs 84-87 Cab Mount Question

    I was looking on the LMC Truck website for cab mounts and saw that they have different rear cab mounts for 81-83 and 84-87 trucks. I'm putting an 83 cab on an 85 frame, so this has me wondering what set to get? Is the difference in the cab or the frame that would require something to change in...

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