Recent content by Matt69olds

  1. Matt69olds

    What are these wires?

    The plug (cruise control lever) in the first picture plugs into the second socket (cruise control harness) in the second picture. Neither has anything to do with the wipers.
  2. Matt69olds

    Remove O2Sensor

    You need some serious heat. Got a torch?
  3. Matt69olds

    700R4 TCC Lockup Issues

    I used a 4th gear pressure switch and a time delay relay. Power to the solenoid and relay coil come from the normally open brake switch. When the transmission shifts to 4th gear, it supplies a ground to the relay coil, 10 seconds later the relay closes and engages the solenoid. Hit the brakes...
  4. Matt69olds

    Aftermarket A/C?

    Either roll the windows down, fix the factory A/C (assuming it’s do equipped) or do it right and install aftermarket A/C. Why would you hack up the truck??
  5. Matt69olds

    Questions on carb upgrade

    https://classicoldsmobile.com/forums/parts-sale-11/new-box-edelbrock-1904-795-cfm-quadrajet-186491/ The ONLY edelbrock carb I’d consider owning.
  6. Matt69olds

    Heavy miss / stumble at 1500+ RPM.

    Does it have HEI? If so, temporarily disconnect the vacuum advance. If it improves or is solved, carefully inspect the tiny wires for the pickup coil in the distributor. If the wires are broken or damaged, more than likely you found the issue. Replace the pickup coil. The problem is caused by...
  7. Matt69olds

    Needs MORE POWER!!! (Tim Taylor Style!!!)

    Beat me to it!!! Nitrous is by far the best bang for the buck.
  8. Matt69olds

    Help needed

    The second set of contacts is either for the cruise control, or as others mentioned the lockup torque converter.
  9. Matt69olds

    TH400 leak around speedo drive

    That’s an easy fix. You need the O ring that goes around the speedo housing, and the small seal that goes inside the housing that seals against the speedo gear. Go to your nearest transmission shop, chances are the builder has a box of those seals. If not, they are cheap to buy new. The...
  10. Matt69olds

    Questions on carb upgrade

    You can’t get more reliable than a properly rebuilt Q-Jet. And unless your willing to spend some time tuning, i seriously doubt you would improve on the performance and economy of a Q-Jet with a aftermarket carb.
  11. Matt69olds

    Knocking/ticking noise after oil pan gasket

    Remove the oil filter, cut it open. Use tin snips, don’t use a hacksaw. Once the filter is cut apart, remove the filter media. Spread it open, look for metallic debris. If the filter is clean, you can be reasonably sure your engine noise isn’t bearing related.
  12. Matt69olds

    bulkhead fitting sludge

    It’s some kind of sealer the factory used to keep water out of the connector. It’s definitely some gooey stuff.
  13. Matt69olds

    Quadrajet Secondary issue?

    Start by a detailed and careful inspection of the fuel system. Check the lines, especially the rubber hoses at the tank. Any cracks or pinholes means the pump is sucking air instead of fuel. More than likely the rubber components have deteriorated with today’s nasty fuels. If you decide to...
  14. Matt69olds

    TH400 Slipping When Warm - Chunks in Oil Pan

    Hopefully you have read Nicks th400 thread. Throw away the spring, replace the broken plastic piston with the older aluminum. Be sure to match up the piston with the intermediate band piston, there were design changes and potential compatibility issues.
  15. Matt69olds

    Nylon cam gear years

    I’m pretty sure all the classic GM engines are interference engines. I know for a fact the Pontiac and Oldsmobile engines will bend every exhaust valve if enough nylon flakes off. And if you just replace the chain without cleaning out the oil pump pickup, you can almost certainly plan on...
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