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  1. backwoodsman

    Putting a gas 350 in a 6.2 diesel frame, quick input please.

    The 6.2L uses the same engine mounts as the SBC. Should be a direct bolt-in, much as I hate seeing a 6.2L truck adulterated with a gasser. :oops: :p I put a 6.2L in a Scout II years (decades) ago, and used SBC mounts.
  2. backwoodsman

    700R4 no engagement any gear, ATF over-full

    Thanks... Was kinda hoping it was the torque converter and the trans was OK, especially since it only has around 75K since the last rebuild. I may look for a used transmission just to get the truck back on the road, then rebuild this one myself and put it back in. It's going to take time to...
  3. backwoodsman

    700R4 no engagement any gear, ATF over-full

    Finally getting back to this after way too long... :oops: Need to get this thing back on the road before too much more time passes. I got a pressure gauge kit and got some numbers: P-N-D-3 70 psi 2-1 170-180 psi R 110-115 psi FSM says to check pressures at 1000 RPM, but pressures didn't...
  4. backwoodsman

    Fuel change over valve Vs twin electric pumps

    No reason it wouldn't work, but you'd want to make sure the pumps have check valves to prevent backflow. And of course, you'd have to deal with the fuel return lines. The fuel return can go just to one tank. Use that tank first, then when you switch, a lot of the fuel will go to the first...
  5. backwoodsman

    Tire pressure

    Unless I'm misunderstanding you, it seems like you may be thinking backwards. More pressure will make a rougher ride and more impact on bumps. If you want to soften the ride, you want less pressure, but the problem with that is those low-profile tires. When there's that little between the...
  6. backwoodsman

    700R4 no engagement any gear, ATF over-full

    Thanks for the reply. I don't have a way to do a line pressure test, but when it happened I did feel the cooler lines to see if it was circulating fluid. The cooler's input was much warmer than the output, so apparently fluid is circulating. I brought it home today. The transmission worked...
  7. backwoodsman

    700R4 no engagement any gear, ATF over-full

    Hi all, 700R4 in my '83 Suburban, was rebuilt around 75K miles ago and has been trouble-free, except for an occasionally sticking throttle valve. Until today. I drove a half hour, it briefly disengaged while driving at low speed. I stopped and checked the ATF, and it was over a quart above...
  8. backwoodsman

    Fuel filter puzzle

    It's tiny, and 15 GPH is going to restrict fuel flow at high power, even when the element is new. And I don't really like mission-critical parts being made of plastic of unknown quality and composition that may or may not stand up to under-hood conditions. And it's not a standard-size element...
  9. backwoodsman

    Fuel filter puzzle

    My '83 has a factory spin-on primary filter/water separator, which I'm glad to have, considering all the problems I've heard of with the box filter. If I had a box filter, I'd change it to a spin-on. I wasn't aware the box filter had a heater, but I live in Idaho and have never needed one. I...
  10. backwoodsman

    Where to find transmission lines

    LMC Truck lists the lines for the diesel. https://www.lmctruck.com/mechanical/drivetrain/cc-1973-87-pre-bent-transmission-lines If that doesn't work out, as has been mentioned, it would be simple to get a cheap flaring kit and tubing bender, and make them yourself.
  11. backwoodsman

    Bad alternator bearings

    I know the thread is a bit old, and I didn't read through the whole thing, so someone may already have suggested this, but just in case... It's really easy to replace the bearings in an alternator. So if you have an alternator that's otherwise good, it makes sense to save a lot of money and...
  12. backwoodsman

    "Oldsmobile Diesel" Conversion to gas

    I did a lot of research on the 350 diesel before buying one. Its reputation is a lot worse than the reality. Its biggest problem is caused by GM's decision not to use a water separator, because they didn't want drivers to have to think about the fact that it's a diesel any more than necessary...
  13. backwoodsman

    Where to find transmission lines

    Another option would be to use transmission cooler hose. If you have old hard lines with good ends, you can cut those off leaving a couple inches, or the bend plus a couple inches, and use those instead of buying hose nipples/barbs. I always double up the hose clamps when doing that, just as...
  14. backwoodsman

    Barn find 6.2 precautionary measures

    Do you know, or can you find out, why it was left to sit 20 years ago? If there was some kind of problem, that would be the place to start. Otherwise, here's what I'd do: I'd recommend leaving the injectors & lines alone unless you know there's a problem there. Put batteries in it and bump...
  15. backwoodsman

    Any tricks to getting your SB doors to close easier?

    I did a couple of mine with PEX. Works great, but you have to remove the striker to get the PEX on, then make sure it's adjusted correctly when you reinstall. So I did a couple more with chunks cut from an old 1/2" garden hose. Works just as well. It probably won't last as long, but so far...
  16. backwoodsman

    Looking to buy our first 6.2

    ...most of whom haven't thought through why it might not be the best idea. Sure it'll work fine most of the time. But if you think through what happens to the geometry of a tire on a too-narrow rim when it gets a heavy side load, you'll see that it's going to compromise traction in emergency...
  17. backwoodsman

    Looking to buy our first 6.2

    Tire manufacturers specify the allowable rim width range for each tire. Most of the 285/75-16's I checked specify 7.5"-9", so yes they are too wide for a 6.5" wheel. It seems like a bad idea to run a narrower rim than the tire manufacturer says is OK. I usually run the narrowest rim the tire...
  18. backwoodsman

    Eratic behavior from a 1985 6.2. Requesting help please

    That's a LOT of air, and it's getting into the fuel system somewhere. Normally there shouldn't be any air there. It's hard to start because the injection lines fill up with air and it just has to crank a while to get the air out of them. Make sure the fuel filters are on tight enough to seal...
  19. backwoodsman

    Update: The surging stopped....took me by surprise

    You never responded on the other thread. Did you ever check the fuel return line to see if it's plugged? Is any air getting into the fuel lines?
  20. backwoodsman

    Looking to buy our first 6.2

    The only part of the fuel system you can see is the primary fuel filter/water separator, and it looks to me like both lines are attached. If you're looking at that disconnected pipe on the right side, that looks like an A/C line they removed when they pulled the radiator. It can prime itself...
  21. backwoodsman

    Looking for 13.5v-13.8v voltage regulator

    Voltage regulators are made in lots of different voltages. I just haven't found one in the range I want, except 1-wire, which I'd rather not do. Car manufacturers use the higher voltages so the battery recharges faster; they don't care that it shortens the battery's lifespan, but I do, so I...
  22. backwoodsman

    Looking for 13.5v-13.8v voltage regulator

    I want to be a little easier on the batteries. When you hold a fully-charged battery at a voltage above its float charge voltage, it's being overcharged, which shortens its lifespan. A lead-acid battery's float charge voltage is 13.2v for flooded cell, and 13.5v-13.6v for AGM. They run higher...
  23. backwoodsman

    Looking for 13.5v-13.8v voltage regulator

    Hi all, I'm looking for a voltage regulator with a lower than normal set point, 13.5v-13.8v, for a 12SI alternator. I've seen a 13.5v one-wire regulator, but I'd prefer not to go one-wire. Anyone know where I might find one? Or maybe an adjustable regulator, if one exists. Thanks.
  24. backwoodsman

    Eratic behavior from a 1985 6.2. Requesting help please

    I'd check for a plugged fuel return line. If it's plugged, it can't purge air from the injection pump, and it sort of kicks the cold advance in & out, which can cause surging, and the hard starting happens when there's too much air in the IP for it to get fuel to the injectors. Easiest way to...
  25. backwoodsman

    Gas to diesel

    You'll want to do the math on RPMs with overdrive before you do that swap. I think you'll find it'll make the engine turn too slow, and actually hurt your MPG, or at best, not help it.

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