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  1. Bextreme04

    Questions about... My rear end?

    Depending on where you got the replacements, they likely haven't been rotating in many years... maybe even decades. So the fact you don't see them leaking means nothing. They are almost guaranteed to START leaking as soon as you start driving around on them regularly. Hub seals for a 14BFF are...
  2. Bextreme04

    Tq converter for 5.3 ls swap in a 700r4

    There is no way this will be cheaper unless you already have all the parts. You can get full motors for ~$500 around here.. throttle body to flex plate. You can get an entire engine/trans/wiring harness/ecm for $1000-2500 depending on miles and condition. Standalone harness for an LS and...
  3. Bextreme04

    Twitchy steering with a big travel trailer (rear sway bar help?)

    That should be fine for what you are doing here. A bumper pull trailer on a weight distribution hitch will be adding about 1000lbs max to the vehicle weight. My guess would be that you have not properly set up your hitch and trailer and that is causing the front to be unloaded and twitchy while...
  4. Bextreme04

    5.7 Vortec and TBI

    Operating range is idle to 5500RPM.... You don't want dual plane for fuel injected. You get horrible cylinder imbalance and they have a hard time running right with dual plane manifolds. You can look at a bunch of dyno testing including specific side by side testing that engine masters did...
  5. Bextreme04

    Eaton MLocker

    Its stupid simple. It's just a lunchbox locker like a detroit is, I would probably hate it on a daily, but for my truck it works just fine. Supposedly it makes a big racket with a manual transmission too, but since I have a TH400, that hasn't been an issue either. I'm sure I'll eventually want...
  6. Bextreme04

    Leaking Metal Fuel Line??

    If it was a hole in the feed line, you wouldn't be able to pump any gas... it would just be sucking air. It is most likely either the weep hole in the bottom of the pump or a leak in the return line. There are two rubber lines from the frame rail to the pump and two more from the metal line to...
  7. Bextreme04

    5.7 Vortec and TBI

    The best solution is to just use the chevrolet performance intake manifold... but it isn't cheap. https://www.summitracing.com/parts/nal-12496821?seid=srese1&gclid=Cj0KCQjwqIm_BhDnARIsAKBYcmv2X8lLrqpVk9IIMRSM5Svs4lUHN4QpfI83WOrYfhDJK_ZynW4hP_caAgxBEALw_wcB Pay attention to the note on the...
  8. Bextreme04

    What's this dohicky

    There isn't an opening into the booster unless the diaphragm is busted. If it did leak out the back of the master it will be stuck back there until you remove the master and then it will all pour out. Make sure you spray it all clean with brake cleaner before you bolt the new one back on. If...
  9. 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...
  10. 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...
  11. 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.
  12. 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...
  13. 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...
  14. 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...
  15. Bextreme04

    Need help identifying connectors

    The connectors on the firewall are for the AC compressor.
  16. 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...
  17. 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...
  18. Bextreme04

    Frost bite radiator & electric fan???

    This is my setup… Original: New:
  19. 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...
  20. 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...
  21. 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...
  22. 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.
  23. 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...
  24. 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...
  25. 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.

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