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  1. Kelvin

    1991 5.3L 2500 Burb

    Would have rather edited the first post with this info but I can't figure it out. Here is a list of parts I used from Amazon. Everything else was purchased from my local napa except the drivers side battery tray from LMC truck. https://www.amazon.com/hz/wishlist/ls/2JTX2T6NHCWZ6?ref_=wl_share
  2. Kelvin

    1991 5.3L 2500 Burb

    Now where did I leave off? It runs! I've driven it probably 20 miles and already did the MAF tuning.Driving across the river without exaust to rhe muffler shop was fun but its super quiet now. In my garage I couldn't get it above 145 degrees and remembered I never did replace the thromostat. Im...
  3. Kelvin

    1991 5.3L 2500 Burb

    I can't remember where I read it now but I remember someone saying the range was linear and if the range was off we could just add a resistor to bring it back to the correct range. I may set up a science experiment in the kitchen involving both sensors when the wifes not looking. :) Minor...
  4. Kelvin

    1991 5.3L 2500 Burb

    https://www.ebay.com/itm/LS-Swap-Coolant-Temp-Sensor-and-Harness-/264486248035 And for 60$ this guy takes all the guesswork out of it. I should have just bought this one from the beginning and been done with it.
  5. Kelvin

    1991 5.3L 2500 Burb

    https://ls1tech.com/forums/conversions-hybrids/1678789-ls-guys-doing-swap-3-wire-coolant-sensor-conversion-part-numbers.html Bextreme go read through this and see if I'm interpreting it wrong but my understanding is this specific part is a 2 wire "sensor" and a 1 wire "sender" in 1. 1998 would...
  6. Kelvin

    1991 5.3L 2500 Burb

    Funny you brought that up. I drew up the diagram last night just so I could wrap my head around it and came to the same conclusion. I settled on the avalanche 1 pin sender and the ict 16mm blockoff plate because the 91 sender is 1/4" npt. Hopefully its still a 90 ohm sender. All stock for now...
  7. Kelvin

    1991 5.3L 2500 Burb

    You could have tapped into the green wire on your 3 wire for your temp gauge same as I could have run 1 extra wire to the front and swapped my 2 wire for a 4 wire firebird sensor. It was just easier to separate them as the gauge wire was already in the right spot (pass rear) so im using the...
  8. Kelvin

    need recomdation for custom LS swap harness

    Your motor doesn't care what gear its in. Does the truck not have neutral cutout for the starter already? If so you dont need that plug at all.
  9. Kelvin

    1991 5.3L 2500 Burb

    Yes Don't forget the corvette tensioner. Link to a good writeup I used for this bracket if anyone in the future needs it. http://www.ls1truck.com/forums/lsx-truck-conversions/47384-holley-ls-r4-c-bracket.html
  10. Kelvin

    1991 5.3L 2500 Burb

    You guys are nuts, those things are spendy but they sure last forever. That one under the truck is at least 20 years old. Got the power distribution all finished up including relays and actually fastening the fuse box down now that I'm happy with where it will live. I haven't moved into the cab...
  11. Kelvin

    1991 5.3L 2500 Burb

    No keeping the factory 91 sender with the fuel pump cutout in tact. That way my gage has the correct sensor and my engine has the low oil pressure protection by shutting down the fuel pump if pressure drops below 4 psi. I lost an engine (ford) a long time ago when the oil pump drive off the...
  12. Kelvin

    LS swap

    They are just the modern version of what the sbc 350 has always been. Cheap, plentiful, and an abundance of aftermarket parts and knowledge to go along with it. I never heard anyone call the sbc 350 a meme when guys were stuffing them into Harleys and snow blowers. Back then, if you wanted to...
  13. Kelvin

    1991 5.3L 2500 Burb

    I almost pulled the trigger on a 1 wire (smaller) oil sending unit to replace the factory ls sensor sense the ecm apperantly does nothing with oil pressure that I can see. Then as I was figuring out what I needed to do to bypass the 91 sensor it dawned on me i should keep it as GM intended. When...
  14. Kelvin

    1991 5.3L 2500 Burb

    So my current time waste today has been fretting over this damn coolant sensor issue. The way I understand it is the 1 wire sensor that came off my 5.7l is 3/8 thread and the gage measures its resistance. Currently at 40* outside it measures 4Kohm. Per the book it measures 55 ohms at 260* and...
  15. Kelvin

    1991 5.3L 2500 Burb

    Haha far from it, but I do see Alot of this at work and always love how neat it looks so I figured I'd give it a shot. Spent most of the day soldering, heat shrinking and routing these wires today. Even re routed a few factory 91 wires I didn't think looked like they belonged anymore. Its...
  16. Kelvin

    1991 5.3L 2500 Burb

    Yeah I've used this thing for more things not related to digging holes. Today's goal was to get the power distribution finished up. Its mostly done. I still need to go pick up a relay for the keyed power side of this fuse block.
  17. Kelvin

    1991 5.3L 2500 Burb

    I wanted it to look as factory as possible , the stock 5.3 location was taken by the motor mounts... and I let the 5.3 one size up :(. The one from my 91 was new last year and I could see dye around the seam So I got a brand new one for this build.
  18. Kelvin

    1991 5.3L 2500 Burb

    And this is pretty close to how she sits today. I've done a little work on the wiring sense this picture, but you get the gist.
  19. Kelvin

    1991 5.3L 2500 Burb

    Gotta have that Factory AC.
  20. Kelvin

    1991 5.3L 2500 Burb

    Ah there is my lovely wife helping me sort out this mess. And what am I supposed to do with this thing? that will never work. Just get this one. Standard Motor Products APS130 Accelerator Pedal Sensor 75 bucks on amazon.
  21. Kelvin

    1991 5.3L 2500 Burb

    I guess I skipped a step. I should probably go get the engine first. Oh look, a broken exhaust manifold bolt.
  22. Kelvin

    1991 5.3L 2500 Burb

    Now that that's squared away, let's figure out this flexplate thing. Just order the one for the van. Lol seriously, ill try and find the Napa part number I used and post it.
  23. Kelvin

    1991 5.3L 2500 Burb

    All cleaned up and time to get to work on the 5.3. Had to do a little shaving to get the clam shells to fit flush on my adapters.
  24. Kelvin

    1991 5.3L 2500 Burb

    Guess this as good a place as any to document my progress. I started this early spring due to rocker studs pulled on a couple cylinders. I could have fixed it but LS sounds way more fun.
  25. Kelvin

    91’ suburban 6.0 ls swap

    I guess I've just been lucky the whole process on mine, Oil pan fit, Stock manifolds fit. 4l80E was already in it. Sill doing the wiring but I should be ready to fire it up in a couple days. I see your battery tray is already on the drivers side. Bonus. I suggest you buy the diesel go pedal if...

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