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  1. Matt69olds

    Th350 spews fluid

    The Full mark on the dipstick should be even with the parting line of the case/pan. Obviously, this will require pan removal to verify.
  2. Matt69olds

    Quadrajet Air Fuel Ratio

    Give the engine what it wants, not what you think it needs. You will probably find the ideal cruise AFR is far leaner than you ever thought possible, or would be willing to go on your own, and the engine will be perfectly happy. I’m Set the idle mixture using the lean drop method. The engine...
  3. Matt69olds

    On this day, a couple of fails (car alarm, door locks, and horn installation)

    Look at the turn signal switch connector. There will be a black wire. That’s the horn relay trigger wire. Ground it, you should hear the relay click, and hopefully the horns sound. Headlight power coming out of the headlight switch is either yellow or light blue. Look at the headlight dimmer...
  4. Matt69olds

    Idle Mixture Screws Do Not Adjust Anything on 1974 454.

    Fix the obvious things first, starting with the vacuum advance. While the distributor cap is off, make SURE the distributor weights under the rotor are free to move, and return to the rest position. If the weights are sticky or frozen, it’s going to run like crap. It’s easy to make your own...
  5. Matt69olds

    My thoughts on spare alternators

    Some batteries have a Reserve capacity rating listed on the label. Reserve Capacity is how long a fully charged battery can support a constant 25 amp load before the voltage drops below 10.5 volts. Since most modern cars will run on 10.5 volts (obviously you can’t START it on 10 volts) the...
  6. Matt69olds

    34 inch tirers speedometer reading

    Well crap, it’s been awhile since I used the TCI speedo gear calculator. I didn’t know they discontinued it. Looks like they still sell the gears. I did a quick google search, JEGS has a calculator as well...
  7. Matt69olds

    34 inch tirers speedometer reading

    https://www.tciauto.com/catalogsearch/result/?q=tc+speedometer+gear+calculator&amnoroute You need to know the current tire diameter and either the drive or drive Gear tooth count.
  8. Matt69olds

    MSD 6AL fuse?

    You don’t NEED 10 gauge, assuming the msd draws an amp or 2 per 1000rpm, 14 gauge is sufficient. I used 10 just because that’s what I had at the time. Put the fuse as close as possible to the battery, and run the wiring carefully.
  9. Matt69olds

    86 K20 4x4 350 Holly Carb - Crank, No Start

    Read this: https://www.gmcmi.com/wp-content/uploads/2014/05/HEI-Testing.pdf
  10. Matt69olds

    MSD 6AL fuse?

    The idea of having an unprotected wire running across the engine compartment has zero appeal to me. Use a fusible link, or overkill fuse. On my Olds, I have the 6AL box mounted behind the passenger headlights. It’s on a place with lots of airflow and out of the way. I used 10 gauge wire with...
  11. Matt69olds

    rebuilt sbc Oil pressure

    Cut the oil filter open. If there is no metallic debris, relax.
  12. Matt69olds

    HEI ignition module relocation

    If it ain’t broke, don’t fix it. Find good Delco modules in a junkyard, or get top quality napa modules. And DONT use dielectric grease, use the proper thermal paste. They are not the same stuff.
  13. Matt69olds

    Do I need an electric fuel pump!

    Windowed style on the left, solid on the right.
  14. Matt69olds

    12v ignition switch source

    Use this: https://www.revolutionelectronics.com/Products/Fuel_Pump.html Wiring a pump to run anytime the ignition is on isn’t a good idea. Yes, people do it all the time, but it not smart. What happens if someone plows into you and you’re unable to reach the ignition, or worse unconscious...
  15. Matt69olds

    4L80 on FB Market Place

    That’s definitely a good deal.
  16. Matt69olds

    TH400 Direct Drum/Sprag Question

    Make sure you take some detailed notes on how far down in the bore each bushing sets. Before I had the fancy bushing driver tools, I used a cam bearing installation tool for a lot of bushings. Once again, unless your planning to build a lot of engines and transmission’s, it’s probably best to...
  17. Matt69olds

    TH400 Direct Drum/Sprag Question

    As long as your sure you will never swap out the small block for a rowdy romping stompin big block, the upgraded sprag type drum isn’t worth the expense. Since you are towing with it, I’d definitely do the dual feed conversion and replace the rear thrust washer with a bearing. Drill the feed...
  18. Matt69olds

    Operation "Save the driveway"

    Go to your nearest parts store and buy a bottle of A/C oil with the fluorescent dye. You will also need a black light, you can get that at the parts store also. Add a little to the fluid and take it for a drive. Once the drive is over and the truck has cooled down, crawl underneath and shine...
  19. Matt69olds

    Fuel guage bounces?

    I wouldn’t be opposed to replacing the fuel gauge if it fixes the issue. Since the truck was originally diesel powered, i swapped in a standard fuel gauge to replace the one that said “diesel fuel only”. I didn’t realize GM changed the coloring and font on the lettering until I was ready to...
  20. Matt69olds

    Fuel guage bounces?

    I seem to recall reading about a fix for this. My wife drove the square for the first time yesterday. After getting out she asked what the deal was with the fuel gauge? It does bounce, a lot! It’s been like that for as long as I can remember. It’s not unusual for it to bounce from 1/4 to...
  21. Matt69olds

    Jack ideas?

    Ever have one of those days where you just want to crawl back into bed and hope tomorrow is better? Long story, hopefully you find it amusing. Had to drive the square to work last Wednesday. I’m not sure if I ran over something or if the tire just failed, but it went flat immediately. Lucky...
  22. Matt69olds

    700R4 Hard/Delayed 1-2 shift

    If you decide to mess with the govenor, I’d suggest getting a spare one to experiment with. That way if you screw something up you have a known good one to go back to. Take detailed notes, make one change at a time. Depending on how picky you are with shift points, you might be done in a...
  23. Matt69olds

    Th400 orange wire

    The trans will tend to “short shift” at WOT without it. Meaning if you stand on it at low speeds, the trans will automatically upshift far earlier than you would want it to. Besides this inconvenience and the no kickdown, that’s the only disadvantage.
  24. Matt69olds

    TH400--Steel Transmission Lines VS Flexible

    Reproduction factory cooler lines are pretty cheap. While they aren’t as cheap as bending your own, what’s your time worth? I used Teflon lined flexible hose on my Olds. If I had to do it over again I’d probably use hydraulic hose. Whatever you use, just remember the cooler line fittings are...
  25. Matt69olds

    Where to get quadrajet rebuilt?

    Cliff doesn’t rebuild carbs anymore, he retired building. He does sell parts. Before doing anything, buy cliffs book. He describes a procedure for verifying the needle/seat actually seals, and if it doesn’t how to fix it. If the needle has a slight leak, it’s possible the float bowl can slowly...

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