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  1. Matt69olds

    WTF is a Hobbs switch???

    The problem is the amount of torque that one inch of friction material can handle before it begins to slip. With a torquey engine, it’s pretty easy to slip that clutch, which creates heat, which causes the friction material to glaze and eventually flake off, which begins to clog the filter...
  2. Matt69olds

    LS swap transmission choice

    Just make sure you are buying GM 5 pinion gearsets. The China versions are made from glass.
  3. Matt69olds

    WTF is a Hobbs switch???

    Very few factory style converters have the clutch surface area to allow WOT with the converter locked. That’s why multi disc converters became popular. Unless the converter is built for it, keeping it locked at WOT will almost certainly smoke it. The friction band on a typical converter is...
  4. Matt69olds

    5.7 to 6.2 diesel engine

    Swap in a 455 Olds!! That is the EASIEST swap. Keep the frame mounts. There is a market for them.
  5. Matt69olds

    4L60 limitations

    If you are going with a 5.3, look for a 4L60E. Use the computer to control it. I build my 4L60/4L60 with the same basic recipe. Install the upgraded dual cage input sprag, use the factory 7 clutch setup for the 3-4 clutches, use a wide 2-4 band (make sure the reverse input drum is absolutely...
  6. Matt69olds

    Overheating climbing a mountain

    Hopefully you were trying to fix a problem that wasn’t really there. Only thing I would add to the discussion is shrouding and baffles. Make sure the radiator seals are in place and fit tight against the core support. Make sure any air that enters the grill has to go thru the radiator.
  7. Matt69olds

    Vac Advance - Yes or No?

    I ram my sniper the first year with the HEI and vacuum advance functional for the first year while waiting on Holley to release the Oldsmobile version of thier distributor. It worked just fine. If the distributor has an advance curve that works well, run it with the advance connected.
  8. Matt69olds

    Automatic transmission newbie asking basic questions

    Make sure the engine reaches operating temp. Make sure the cruise/TCC switch is adjusted correctly. Pretty sure those trucks have 2 brake light switches, one for the brake lights, one for the cruise/TCC. Just as a cheap/easy diagnostic aid, next time it acts funny, pull up on the brake pedal...
  9. Matt69olds

    Temp gauge problem

    Find the green wire that goes to the sending unit in the head or intake. Disconnect it, see what the gauge does. If it reads cold replace the sender. If it still reads hot follow the wire towards the firewall. Make sure the wire isn’t pinched under a valve cover or grounded somewhere.
  10. Matt69olds

    swapping a 1982 700r4 to a 1989 700r4

    Pretty sure the 4 pin connectors are all wired the same with the same pinout.
  11. Matt69olds

    Is it even possible to have a completely leakless 350?

    If it ain’t leaking oil, you better add some! It’s pretty rare to find any old engine designs that don’t leak a little oil. They may not leave puddles, but the dust and dirt collects where the oil ever so slightly oozes out.
  12. Matt69olds

    This came out of the window switch. HELP

    Here are the terminals. https://autofastenersandclips.com/products/auveco-23167
  13. Matt69olds

    Best aftermarket antenna option

    My 81 GMC has an antenna in the windshield, I have no problem picking up the classic rock FM station from 50 miles away.
  14. Matt69olds

    What size press (12 or 20 ton) for automotive

    I have a cheap 12 ton harbor freight press I bought probably 20 years ago. I don’t think I have ever needed more than the ram can provide. What I have needed is the additional “room” in the press. For example, several years ago I needed to press the C-clip eliminators off my axles. The axles...
  15. Matt69olds

    Qjet fuel drainback information

    So was I. I’m thankful to learn from others and at the same time a bit concerned about the future. Let’s use a carb as an example. It’s not too difficult to rebuild a Q-Jet or any other style carb for that matter. The difficulty comes from tuning or modifying one to do what you want it to do...
  16. Matt69olds

    Qjet fuel drainback information

    There is always someone who knows something you don’t, learn from them. Cliff also had a Q-Jet forum, lots of very knowledgeable people there as well.
  17. Matt69olds

    Qjet fuel drainback information

    You don’t buy a copy, and save the books for the less knowledgeable people. I have been building them long before the book was printed, and still learned a great deal.
  18. Matt69olds

    700r4 year interchangeably question

    Look on the psssenger side of the case. If it has the St Louis arch casting line above the servo, and has a TV cable, it’s a good core to build.
  19. Matt69olds

    Qjet fuel drainback information

    Good point, I forgot about the windowed seats. If anyone is serious about building a Q-Jet the right way, Cliff Ruggles book should be considered required reading.
  20. Matt69olds

    Qjet fuel drainback information

    The fuel draining myth is just that, a myth. Think about it, for fuel to drain, fuel will have to go uphill, past the needle, out the filter housing, and then drain. What’s happening is a result of todays fuels. Gas made 30 years ago had additives for carbureted vehicles to prevent fuel...
  21. Matt69olds

    Steering column/ headlight wiring

    As common as these trucks are, find a factory column that fits the truck. The dimmer switch pinout is the same for column of floor mounted dimmer switches. You will need to lengthen the wires to reach the floor. The wipers will be a little more difficult, it depends on what switch your new...
  22. Matt69olds

    New wiring harness difficulty

    can you hear or feel the relay click when pushing the horn button? Find the heavy dark green wire coming out of the firewall connector. Check for power on it when pushing the horn button. If you have power, go to your nearest salvage yard and get a couple horns off a late model Cadillac or...
  23. Matt69olds

    WTB: 76 77 Jimmy radio

    I just saw a Delco AM/FM cassette deck at an antique/flea market store in Coldwater Michigan yesterday. It was about a mile east of I 69. There was no price, no tag.
  24. Matt69olds

    New wiring harness difficulty

    Make sure the brake lights and interior lights work. The horn is on one of those circuits. Make sure you don’t have a blown fuse. First, test the horns under the hood behind the grill. The horns ground thru the mounting brackets. Apply power to the terminal on the horn, it should sound...
  25. Matt69olds

    CB Radio

    Here is a picture of me infuriating my wife. The truck was only a few months old when I did this. I cut the dash in my truck to fit a radio. As big as modern trucks are, there is little room for aftermarket radios. I did think this thru before I did it. I cut nothing structural, and had...

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