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  1. Matt69olds

    Timing is way advanced

    I’m not very familiar with all the different “families” of small block Chevy, didn’t some years have the timing marks in different locations? Maybe he has a balancer/timing mark mismatch? It’s easy enough to make a new timing mark on the balancer. Put some masking tape around the balancer, put...
  2. Matt69olds

    Alternator ignition wire always hot

    Are you talking about the red wire in the plug, or the brown wire? How are you testing it? If you have power on the brown wire with the ignition off, replace the regulator.
  3. Matt69olds

    Here's one for the Holley/Eddy debate...

    I’d love to find another 1910 carb. Out of all the different carbs I have had on my Olds, none ran as well, got anywhere near the economy, or as trouble free as the Q-Jet.
  4. Matt69olds

    Here's one for the Holley/Eddy debate...

    Elevation is not that big a deal. Holley says drop one jet size for every 2000 feet increase in elevation. Granted, a change of 5 jet size is a pretty big jump, but assuming the engine is pretty well tuned it will run just fine. It’s definitely not ideal, but it won’t be weezing or pouring out...
  5. Matt69olds

    Here's one for the Holley/Eddy debate...

    Edelbrock DID have a new Q-Jet about 25 years ago. They bought all the tooling from Rochester when the factory in New York ceased Q-Jet production. They addressed some of the factory flaws, included a performance calibration, included factory electric choke, and use to offer tuning parts. I...
  6. Matt69olds

    700R4 question

    Not all pressure switches work the same. Some are normally open (grounds when pressurized) others normally closed (grounded UNTIL pressurized) either can be made to work, you just need to be creative with the wiring methods.
  7. Matt69olds

    Mounting Location of Courtesy Lights

    I swapped the underdash courtesy lamps from a Silverado into my GMC years ago. The mounting holes are already under the dash. There are plenty of mounting hole options under the dash. I’m betting the decision will be easier once you run the wires under the dash. How generous Painless is with...
  8. Matt69olds

    I want to drive an '89 suburban 700 miles home, what should I know?

    If the truck is solid, and the price is right rent a uhaul and trailer to bring it home. My dad had some really desirable cars when he was younger, but is not a gearhead. He told me years ago “engines and transmissions are easy to fix, bodywork is expensive. Find the most solid rust free car...
  9. Matt69olds

    I want to drive an '89 suburban 700 miles home, what should I know?

    I’m glad I’m not the only one that has these problems as I age!! I use to be a huge snowmobile fanatic. Usually twice a month, me and a group of friends would leave Friday evening, drive the 10 hours to the U.P. Of Michigan, ride all day Saturday, sleep a few hours and drive the 10 hours home...
  10. Matt69olds

    92 Yukon interior parts needed (maroon color)

    Looking for passenger side seat recline lever, and drivers side A pillar trim piece that goes along the inside of the windshield, and up above the door opening. Recline lever looks like this, and this appears to be the correct color. 30 years of sun fade has no doubt changed the color.
  11. Matt69olds

    Question about the 700r4 4-pin pigtail connector

    To the best of my knowledge, every 700 has a 4 or 5 pin connector. Sounds like someone has modified the trans for manual converter control for a retrofit installation. Assuming you have your old trans, you could swap the internal harness, solenoid, and pressure switches into the new trans...
  12. Matt69olds

    700r4 swap.

    The 700 requires no vaccum. What it does require is a TV cable and the proper brackets to make it work correctly. If you are using a Q-Jet, make sure you have the proper factory brackets. You will need to transfer the throttle arm from a factory 700 equipped q-Jet to your existing carb. Read...
  13. Matt69olds

    I want to drive an '89 suburban 700 miles home, what should I know?

    Several people have mentioned Riadkill. Dave Freiburger has wrote several articles on his vehicle rescues. He says as soon as he has possession of the vehicle, he hits the nearest pawn shop and buys a handful of cheap tools. No major expense, and who cares if you lose s bunch of harbor freight...
  14. Matt69olds

    Convenience center mounting

    These are the best pics I could take with the limited time I had. The cruise control module clipped to the bracket above the gas pedal, the convenience center bolts above and to the right of the pedal. Unfortunately, with the brake controller in the way I couldn’t get a decent pic of how it...
  15. Matt69olds

    Convenience center mounting

    Ok, I’ll stop by there tomorrow and take a pic.
  16. Matt69olds

    Convenience center mounting

    I’m not anywhere near my 81 GMC, or I would take a picture. It does go above the gas pedal. I would think you could find a pic online somewhere. I seem to remember needing a screw with a stud to mount it, maybe I’m wrong. I have slept a lot since I put all that together. My truck is at my dads...
  17. Matt69olds

    What is this harness?

    That’s the taillight harness. There should be a light green (reverse lights) brown (taillight feed) green (left turn/brake) yellow (right turn/brake) and a pink (fuel gauge sending unit) What works and doesn’t work? Find the taillight harness, it’s clipped to the frame rail. I bet you find...
  18. Matt69olds

    Replacement parts for bed cover?

    I have a cover on the bed of my Ram. I bought this cover during the dark period of Covid. I got it thru summit racing, at the time that was all that was available. One of the hold down clamps is broken. I called Summit, they tell me the manufacturer has discontinued that model and no parts are...
  19. Matt69olds

    TCC issues on 4L60

    It’s easy enough to test the TCC solenoid once it’s out of the trans. Pull the solenoid, use a rubber tipped blowgun to apply air to the tip of the solenoid, air should exhaust thru the solenoid. Apply power (make sure you observe the polarity, some solenoids use a diode) the exhaust should...
  20. Matt69olds

    TCC issues on 4L60

    Pin F or the ALDL is converter clutch. If I remember correctly, if you put a test light on pin F the light should be on until the PCM provides the ground, then the light should go off. The ECM looks at lots of engine/drivetrain data to determine when the converter should lock. Things like...
  21. Matt69olds

    Stress cracking on transmission case, is it rebuildable?

    That’s normal casting marks. Nothing to worry about. Poor man’s crack detection: spray paint. Clean it up, make sure there is no oil on it, give it a coat of paint. If there is a crack the paint will seep in and make it visible enough for Stevie Wonder to see it.
  22. Matt69olds

    Electric Fan Conversion

    ^. What he said! It’s hard to beat factory engineering. We all like to think we work and abuse our trucks, but what the factory did during development was brutal. These trucks didn’t overheat when new, assuming it’s maintained they shouldn’t now. The best fans are either the high dollar...
  23. Matt69olds

    TH350 speedometer drive 2WD

    Read this: https://www.tciauto.com/speedometer-gear-calculator You can use this to figure out what gears you need.
  24. Matt69olds

    LS swap transmission problems

    PO740 is a converter slippage code. Meaning the pcm is commanding the TCC to apply, but it either isn’t or it’s slipping Can you feel the converter engage? Get it up to highway speed, stay steady on the throttle and touch the brake pedal. Not enough to actually slow the truck, just enough to...
  25. Matt69olds

    TH350 speedometer drive 2WD

    It’s a ratio adapter used to fine tune the speedo. Certain tire size/gear ratio combinations require speedo gears that don’t exist. The ratio adapter can fine tune the speedo. If you clean all the crud off the adapter you will find the ratio. Some overdrive the speedo (if it reads slow) or...

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