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  1. Hunter79764

    AC system identification

    Yeah, pretty sure that isn't factory but I'm no expert on the older stuff for sure. I'd still do a leak detector dye to see where the leaks are. If your evaporator and/or condenser and/or compressor is fine, I'd just replace all Orings if you have them (maybe just the compressor?) and I'd be...
  2. Hunter79764

    AC system identification

    I'd try to find your leaks with dye before you get too far, but I'd probably plan on replacing those hoses either way. They worked, but with the cracks visible, I don't think I'd trust them much longer. That isn't a factory compressor setup, to my knowledge they never put Sandens in these...
  3. Hunter79764

    R12 to 134. Whats really needed to do this swap for a great working system. All parts needed?

    It certainly can be that easy. Again, if the system is plenty good with R12, it ought to be fine just swapping to 134 with compatible materials etc. You will lose maybe 10-20% due to the refrigerant characteristics, but in a single cab it should be fine. But I can tell you my Monte Carlo was...
  4. Hunter79764

    AC Troubleshooting 1976 GMC C15

    Oil shouldn't "plug" an orifice. If get a slug of oil, it will restrict it as it is much thicker than refrigerant, but shouldn't stop anything. Did you drain the oil out of the compressor before you began? They usually ship with some amount in them already, that might be an overcharge of oil if...
  5. Hunter79764

    Advice and Parts recommendations for some 6.2 cam/valvetrain work?

    Little bit of an update, I finally got a couple hours to tear down a little more. Confirmed that I had 2 lobes with damage, one lifter was pitted and the other was flat-spotted. Oil had a few larger than glitter specs that moved with a strong magnet on the backside, not much other metal etc. I...
  6. Hunter79764

    Well...It was a day.

    I'm 1/4 German, 1/4 Irish, and half mutt. I think it means like I like beer but can't handle too much...
  7. Hunter79764

    Well...It was a day.

    I had a buddy that ruined a fresh built 351 with a similar situation, temp controller had a temp readout that was showing low from what I remember, waited for it to get to "180°" and only saw that it was well overheated after damage was already done. Also a good reminder to hold off on those...
  8. Hunter79764

    Now we move into desperation territory (seeking advice)...

    I wouldn't recommend a holley system for what you're looking for personally, no real reason other than my feelings and opinions, but the 60 psi system isn't a problem, just search the LS threads. Hopefully your ECM fixes it, or you find another solution somewhere. I have seen stray grounds do...
  9. Hunter79764

    Regearing Advice... What do I need?

    Basically, its saying ~2400 RPM is MPG special but a dog in town, ~2750 is compromise, and 3000+ has you passing everything except a gas station... All of that of course depends on your exact setup and your definition, but it's a guideline. Note, I'm assuming that chart is based on a 1:1 final...
  10. Hunter79764

    R12 to 134. Whats really needed to do this swap for a great working system. All parts needed?

    If the AC is generally adequate, the old style condenser is reasonable. The newer style condenser (flat tubes with zigzags in between, vs the old style with tubes going horizontal through aluminum fin plates) is no question more efficient at rejecting heat. If an existing R12 system cools just...
  11. Hunter79764

    Now we move into desperation territory (seeking advice)...

    You can buy the megasquirt assembled, you will probably still need to do some harness work on your own though. Do what you think best, but the TBI computer and the LS computers are both usually pretty reliable units. Newer stuff will tell you what is wrong with reasonable degree of accuracy and...
  12. Hunter79764

    Now we move into desperation territory (seeking advice)...

    2 thoughts, first is I had a similar issue on a different setup, tracking things down seemed to narrow it down but threw me for a loop continually. Ended up being a ground terminal on a bolt that I didn't tighten (stupid mistake, "I'll get it later" then went to bed and forgot...), bouncing...
  13. Hunter79764

    Auto A/C vacuum pump. lots of CFM or Less CFM whats best?? A/C tech's please help.

    On bigger systems (i.e. residential and commercial HVAC instead of automotive) more CFM = less time to evacuate/pull vacuum. Like welder said above, a minimum size is needed to actually work practically, but basically the bigger the better, all things even. Auto systems occasionally doesn't...
  14. Hunter79764

    Factory power steering cooler? 1991 Suburba

    Later model (2000-2013 ish for sure, maybe newer ones too) have a very similar cooler, just a different bracket. I don't think I've seen a suburban without one, and probably most half ton pickups with a towing package have it too. Probably on at least half the trucks in the U-Pull-It yards...
  15. Hunter79764

    Regearing Advice... What do I need?

    2 things come to mind... Swapping the rear gear is going to be your time crunch, if your axle has other issues in general, can you find a lower mile complete axle with 4.10's and swap the assembly? The front can take more time, as long as you don't use 4wd in the meanwhile... 2nd thing, I'm sure...
  16. Hunter79764

    Adding AC after ls swap

    Good advice above, I'll recap here: You can get a bracket to move the squarebody AC compressor to the LS, but I think most, myself included, would say getting rid of the R4 would be a smart move. They don't seem to last, and they don't crank as cold as the right modern compressor will. And the...
  17. Hunter79764

    ‘91 Suburban A/C Cooling Help

    134 in general needs a good condenser, especially when we're trying to cool off these glass barns with bad insulation ;) Just a general note about it though (not geared towards anyone in particular, legitimately just a note for anyone reading about conversions and cooling challenges like this)...
  18. Hunter79764

    73-87 Stake Pocket Tie Downs

    I got a suburban so I wouldn't have to worry about tie downs, but it looks like there are some options out there. This is a pricier set, but the image is on a squarebody so you should be good on fitment? https://www.classicindustries.com/product/1985/chevrolet/truck/parts/p99900ch.html Edit - I...
  19. Hunter79764

    Biggest jobs you have completed in the shortest amount of time.

    I forgot the more recent one... On my trip when I toasted the transfer case shifter, I decided I'd try to find another one to replace it while in my hometown. I made a call at about 10:00 AM, had a new case and was at the parts store getting fluids etc. by 12:30, grabbed lunch on the way home...
  20. Hunter79764

    Biggest jobs you have completed in the shortest amount of time.

    Might not be the fastest, but I was on a work trip with a bunch of coworkers, and one of the vans started leaking from the water pump. They called around, the best any shop could do was to take it in that Friday, when we were due to drive 8 hours back to Texas, and it was going to be $500 or...
  21. Hunter79764

    "Overheating" --> Now Fuel Delivery Issue --> Dirty Tank?

    Agree on all above. To get into troubleshooting mode, you are likely looking at an issue on Driver tank only, possibly obstructed pickup, possibly cracked hose sucking air, possibly a combination, and possibly something different. Your "known good" point is probably the line leaving the...
  22. Hunter79764

    What have you done to your square lately??

    Yep, that's the setup. I'll hop its just that, then, and not a second transfer case shot. Or worse, a transmission issue of it's own. Would it leak a lot of trans fluid even when it isn't running? The transmission was in park, and had been the entire time (transfer in neutral, of course). I...
  23. Hunter79764

    "Overheating" --> Now Fuel Delivery Issue --> Dirty Tank?

    I forgot about this, a tank vent issue could very easily be the culprit. Do like he said, leave the cap loose/removed and see if it fixes it. Or, drive until it fails, pull the cap, and see if it starts back immediately. This happened to a buddy with a Mustang, every day at the same spot in his...
  24. Hunter79764

    What have you done to your square lately??

    I think I broke mine, does that count? Took it on vacation, flat towing behind the RV. The first leg, the transfer case wasn't fully in neutral, I think, and the shifter basically burned up. Miraculously found a replacement transfer case, but it started leaking the next day, and I decided my...
  25. Hunter79764

    Should I Drive My Truck To OBX For Our Annual Beach Vacation

    I've used the fan type (flat "blade" of water going side to side in 5-10 seconds) and the spot type/rotating random/kids running through and jumping over type. Mainly something that sprays up more than out. The Fan style worked great for getting mud off too, I placed it on top of each tire and...

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