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  1. Matt69olds

    Overheating 87 TBI

    How hot does it actually get? Put a real gauge on it, and see what happens. You may be pleasantly surprised. When does it overheat? Idle? Going down the road? Are all the factory rubber baffles/gaskets/seals around the radiator in place? Any air that goes around the radiator instead of...
  2. Matt69olds

    Update on my Ignition Module failure!

    Nope, you’re not nuts!!! I do the same thing. Unfortunately, my supply has almost vanished, and they aren’t in salvage yards anymore. I’d rather have a good used 20 year old Delco module than the crap they are selling at the stores today.
  3. Matt69olds

    TH400 Yoke Bolt Came Out

    Then you should be good.
  4. Matt69olds

    TH400 Yoke Bolt Came Out

    You need a washer also. It needs to fit well to the register inside the yoke. Technically, all the bolt does is keep the yoke in place, and to prevent transmission fluid from seeping between the splines of the output shaft and yoke.
  5. Matt69olds

    Column wiring harness need help

    Here is a wiring diagram from a 87 G body, should be very close to what you need.
  6. Matt69olds

    TH400 Yoke Bolt Came Out

    I just tossed a handful of those bolts last week. Bummer. I would think as long as there is no other damage, replace the bolt, and either the complete housing or the bushing and seal and relax. Put some loctite on the bolt and properly torque it.
  7. Matt69olds

    Wiring Harness? Choosing one?

    Agreed! Even if you’re starting from scratch, you could buy a couple good used harnesses and build one far cheaper.
  8. Matt69olds

    Need help wiring power windows and door locks 83 K1500

    If your referring to the relay I suggested, just about any GM car or truck 1990ish and newer will have one. Sometimes they are in the door jamb area, behind the glove box, it shouldn’t be hard to find one.
  9. Matt69olds

    Truck cranks and starts and dies immediately

    Since you have HEI, the BEST way to wire it is to find the original resistance wire and remove it. Then you can install a regular wire in the original spot and eliminate the ignition bypass wiring and extra connections at the fuse box. You need a Series 56 male terminal, a couple bucks from...
  10. Matt69olds

    headlight/seat belt buzzer

    I don’t remember the RPO code, but the blue chime module is the holy grail. That’s the one that doesn’t just sound an alarm, it has a Speak N Spell type voice that tells you the key is in the ignition, the door is ajar, the lights are on, trunk open, etc. Those modules were found in Cadillacs...
  11. Matt69olds

    4l60 swap

    What PCM does the truck have to control the LS? Before doing anything, make sure the PCM won’t control a transmission. If do, definitely use a 4L60e. That will solve the TV cable issue, and allow you to dial in the shift points and converter lockup exactly where you want them
  12. Matt69olds

    Carb rebuilders?

    John Herald Jr Ray Kleem there are several others on the Q-Jet Facebook page. I know Ray and Cliff worked together, I think Ray took over the rebuilding when Cliff retired.
  13. Matt69olds

    Pumping Air to a Catalyst

    The temp switch automatically locks the converter if it gets too hot. The theory is a locked converter will reduced heat. Of course, by the time the transmission is hot enough to trip that switch, the damage is probably already done.
  14. Matt69olds

    headlight/seat belt buzzer

    I think the difference is for seat belt warning. There is a trigger wire for the seat belt switch in the seat belt latch, and another wire that is an output for the seat belt warning lamp in the dash.
  15. Matt69olds

    headlight/seat belt buzzer

    The easiest way to disable the key warning is to unscrew the door jamb switch, and disconnect and tape off whatever wire isn’t white. If I remember correctly, the wire for the key is tan. Problem solved.
  16. Matt69olds

    I’m buying a lottery ticket!!

    For some reason, I can’t post pics!! What’s up with that?
  17. Matt69olds

    I’m buying a lottery ticket!!

    Over the winter, my son and I have been fixing/updating some severely neglected things on his 92 Yukon. Things like replacing the crumbling dash, the falling headliner, rebuilding the suspension, installing a lift kit, installing heated back glass/mirrors, power seat, etc. One of the big items...
  18. Matt69olds

    headlight/seat belt buzzer

    I’m curious, why do people despise them? I get it, the key in the ignition chime is annoying, but the headlight warning would be worth the inconvenience. On a related subject, it’s easy enough to disable the key warning, while leaving the other chimes functional.
  19. Matt69olds

    Pumping Air to a Catalyst

    GM warmed the converters in the most reliable way at the time. Meaning they calibrated a cold start with increased idle speed, delayed the converter clutch from locking until the engine reached a certain temp, all to keep engine rpm higher. They use the same strategy now, except the disable...
  20. Matt69olds

    TH350 Removal

    If your going to add a plug, drill a small hole where your going to install the plug and let it drain that way. Much cleaner that way.
  21. Matt69olds

    TH350 Removal

    If the trans has a drain plug, use it! If it doesn’t have a plug, now would be the ideal time to install one!!
  22. Matt69olds

    Accelerator Cable Adjustment

    How about some pictures of what you’re working on? What carb/intake, are you using? It might be quicker and easier to just buy the correct brackets instead of trying to engineer what you need. Basically you need the resting position of the cable to move away from the throttle arm on the carb...
  23. Matt69olds

    Th350 rebuild (lost drive gears)

    The clutches have definitely seen some heat, but they aren’t burnt. What’s the pump look like?
  24. Matt69olds

    Suburban Trans Pan removal help

    Raise the transmission as high as possible, get as much clearance as possible between the pan and the crossmember. If that doesn’t help, slide the crossmember back.
  25. Matt69olds

    Turbo350 w/shift kit slamming 2nd gear

    Lube the seal with vasoline, place the o ring in the case, right up against the step it seals against. Lube up the cover, put it square against the seal in the bore. Use a large socket and a prybar against the floorboard to push the cover in. Once it’s in place, reinstall the ring. It will...

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