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  1. Bextreme04

    Eaton MLocker

    My 2011 Suburban has the original G80 rear end in it. I swapped gears to 4.10 a few years ago and swapped the 5.3 for a 6.2. My wife daily drives it and we use it for cross country and local camping trips pulling our 6400lb travel trailer. It has ~250k miles on it now and still going strong. I...
  2. Bextreme04

    What's this dohicky

    Its a load proportioning valve. It limits the amount of braking action on the rear brakes when unloaded so that they don't lock up, while still allowing max braking when loaded heavy in the bed. If you are trying to flush the system, I would disconnect the lever from the diff and put the arm as...
  3. Bextreme04

    1986 K10 Cutting off When Put in Gear

    Yes, very possible. It's also possible you didn't properly secure it, didn't plug it in all the way, it's come loose, etc... The fact that it cuts off when you move the column points to something being out of whack there either with the switch or the wiring in the column.
  4. Bextreme04

    454 long block replacement and associated sensor issues

    He is wrong about this. That is not a safety feature in the way described and it doesn't work that way to begin with. The electric fuel pump on TBI and MPFI GM engines is primarily powered by a relay. On truck systems from 87-97 they also had a separate power feed that spliced off from battery...
  5. Bextreme04

    Tq converter for 5.3 ls swap in a 700r4

    Nobody sells a new anything. If you buy one from summit it is going to be rebuilt. I'd take the one rebuilt by a reputable local company over a mail order trans every day of the week. The factory 4l60e that is going to come with your swap engine is already "built" for the power and would...
  6. Bextreme04

    Tq converter for 5.3 ls swap in a 700r4

    If you can get one, it will be faster and easier to just get a full 5.3/4l60 combo from the donor. A 4L60 is identical to your existing 700R4 externally, but you won't have to worry about a TV cable and you can adjust your shift points and pressures from the computer at the same time you are...
  7. Bextreme04

    Need help identifying connectors

    The connectors on the firewall are for the AC compressor.
  8. Bextreme04

    Do I even need a gas tank vent tube?

    Your problem has nothing to do with the vent. The saddle tanks are notorious for having the fill tube almost horizontal, which makes it hard for any volume of fluid to move through the tube and into the tank while filling. When you moved the tank upwards, you made the fill tube go past...
  9. Bextreme04

    Frost bite radiator & electric fan???

    Ah, yep that makes sense. There is actually another method that is fairly common. Volvo had a single fan that was PWM controlled for fan speed. It is the exact right diameter to fit inside of the stock shroud. I've seen where people have riveted the volvo single electric fan inside of a stock...
  10. Bextreme04

    Frost bite radiator & electric fan???

    This is my setup… Original: New:
  11. Bextreme04

    Frost bite radiator & electric fan???

    I'm having a hard time envisioning how a body lift would have any impact on being able to run the lower fan shroud... why is it an issue? I have modified my core support to use a factory 96-99 Vortec 454 suburban radiator and modern 2006+ 2500 Silverado electric fans. They fit well and move a...
  12. Bextreme04

    1986 K10 Cutting off When Put in Gear

    Converter lockup is an electronic signal. If the converter lockup engages while it is sitting there at idle, it would be like dropping the clutch while engaged at idle in a manual car. It sounds like your ignition switch might be out of whack or loose… not the key cylinder itself, but the...
  13. Bextreme04

    Mysterious coolant leak.

    No, you generally use a thread sealer with PTFE like this: https://www.permatex.com/products/thread-compounds/thread-sealants/permatex-thread-sealant-with-ptfe-16-oz/ It's basically liquid teflon tape... but better. The sealer goes on the threads of the bolt before installation. You do this...
  14. Bextreme04

    Mysterious coolant leak.

    Wow... real hard to see what's going on around there. I would suggest step one is still to clean the area so you can see what the heck is going on. Honestly, with only the one zoomed in picture, I'm not even sure what part of the engine we are looking at there.
  15. Bextreme04

    Mysterious coolant leak.

    It looks to me like you have a core plug just to the right of the fitting that is wetter and appears to me to be the actual culprit. Hose down that whole area with some brake cleaner and scrub it to see what it actually looks like there. If the engine has been run with old or no antifreeze in it...
  16. Bextreme04

    What have you done to your square lately??

    I had the same experience in Arizona. HVAC supply shop was 150yards down the road from my house. Had the AC fail to turn on in the middle of summer. Went up on the roof and troubleshot it with my multimeter and found the fan start capacitor was toast in about 3 minutes. Pulled it off and walked...
  17. Bextreme04

    Electric fuel pump

    We need to see some pics of this. What holley 750 is it? If you get the Sniper, then you might as well get the holley in-tank sender/pump kit at the same time. Until then, you aren't going to solve this problem with another pump in the mix.
  18. Bextreme04

    Electric fuel pump

    It's unlikely that you are actually getting vapor lock with the symptoms you are reporting and the equipment you have. If it was vapor lock you would get an immediate start and then it would die after a few seconds once the fuel bowl ran out. There are a few things that could be causing your...
  19. Bextreme04

    Sending unit 4 tubes

    Yep, that's the charcoal canister that keeps the truck from stinking of fuel when it is parked. Looks like it needs to have most of those lines checked for dry rot and cracking. Looks like you might have one or more missing or cut lines as well. You should be able to see where all the lines go...
  20. Bextreme04

    Sending unit 4 tubes

    This The little module on the end of the vent tube is meant to prevent liquid fuel from going into the vent tube.
  21. Bextreme04

    Did GM use Spicer parts from the factory?

    Yes. Also, my factory locking hubs are spicer branded on my '80 K25 with a 10 bolt front axle.
  22. Bextreme04

    2.5" Skyjacker final thoughts

    The other thing to consider is that it is likely that the sway bar is binding up and greatly stiffening up your ride. The sway bar disconnect kit from ORD is a huge improvement to ride quality and I usually just leave it disconnected while daily driving. When I am towing or have a heavy load in...
  23. Bextreme04

    Condenser Replaced - a few pics

    Not surprising... since the post was from 10 years ago and they no longer make the part. This is the only similar one I seem to be able to find... good ratings, but straight from chi-na https://www.amazon.com/dp/B003R377NU/
  24. Bextreme04

    Anyone going to the Portland Swap Meet this year (2025)?

    I went a year or two ago and it was great. Lots and lots of cool cars and booths with lots of junk and some sprinkled in hidden gold. @Catbox is right there in the area and seems to have made it there many more times than I have... I've seen some pics form him with quite the collection of...
  25. Bextreme04

    8.1 vortec into 1979 k30

    Yes, you can switch to the chevrolet performance front cover with a 24x crank/1x cam sensor in the cover, but its expensive and doesn't really get you anything. You can reach up in there and get to the sensor just fine on the side of the block, you just have to remove the starter I think. There...

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