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  1. chevyracer8262

    99 tahoe OBS 383 0411 issues

    I have a 99 Tahoe with a custom built vortec style 383 stroker in it which I have converted to run on the 0411 Gen 3 PCM and I had that thing running ok driving it around tuning it when I noticed the coolant temp was reading 57deg f after over 30 minutes of driving then the engine died. Since...
  2. chevyracer8262

    1999 Tahoe will bot run... please help

    My apologies the new ground wiring all toned out good and registered 0 resistance on my fluke multimeter I was worn out and rushed last nights post, attached is the spark tester and I was so frustrated that I even held a spark plug while spinning the engine to verify no spark
  3. chevyracer8262

    1999 Tahoe will bot run... please help

    Here's a pic of the spark tester which is an oem brand that I set at 0.060" gap for the spark test, spark plugs are new autolite iridium no 26 plugs which were recommended by an engine builder I know because I have Protopline/early gen RHS 180cc angle plug heads that I did a little port work to...
  4. chevyracer8262

    1999 Tahoe will bot run... please help

    Ok I followed the directions an advanced ignition diagnostics section of the service manual and every input and output required has power measured between 12.25 and 12.4vdc and every ground in the entire harness registers between 64 and 75 ohms to a clean engine ground, checked the signals from...
  5. chevyracer8262

    1999 Tahoe will bot run... please help

    I checked Power and grounds at all of the sensors, coil and ignition module all have power and ground and all ate brand new right out of the boxes, I'm checking for spark at the coil with a spark tester, and the distributor is an alum housing aftermarket 96-02 vortec 5.7 distributor which the...
  6. chevyracer8262

    1999 Tahoe will bot run... please help

    Sorry I guess I need to clarify my rushed post from last night. The engine spins over but has not fired since the backfire Saturday, when I was building this truck I continuity tested every wire and every connector and repaired anything in need of repair, after the backfire I replaced the crank...
  7. chevyracer8262

    1999 Tahoe will bot run... please help

    My 99 Tahoe that I did a 383/4l80e with 0411 pcm was running good and I was able to put about 700 miles on it then it just shut off and would not crank, after sitting for 5-10mins it would crank so I thought coil so I got a used coil and ignition module from my uncle put it on and drove the crap...
  8. chevyracer8262

    1999 tahoe 0411 swap gauge issues

    I did an 0411 swap running the 02 express van 5.7 4l80e calibration on my 99 tahoe 383 4l80e conversio and now the speedo pegs at 100mph sitting at idle in park but when I drive it vcm scanner reads the correct speed also the tach is kinda all over the place sometimes it reads low sometimes it...
  9. chevyracer8262

    My 99 Tahoe 4wd build..

    That's overture Black ASA using my upgraded ender 3 inside an air tight custom enclosure
  10. chevyracer8262

    My 99 Tahoe 4wd build..

  11. chevyracer8262

    My 99 Tahoe 4wd build..

  12. chevyracer8262

    My 99 Tahoe 4wd build..

  13. chevyracer8262

    My 99 Tahoe 4wd build..

    It's been a minute bit I got started working on the Tahoe again...
  14. chevyracer8262

    Np241 transfercase mechanical speometer parts

    I tried with the cluster but there's no way to recalibrate plus you can't get replacement motors for the gauges that are bad other than junkyard parts and I've tried 2 different one already and both have issues so I'm going to 3d print a mount to house a full set of aftermarket gauges I already...
  15. chevyracer8262

    Np241 transfercase mechanical speometer parts

    Does anyone have or know where I can find a 88-89 np241 mechanical speedometer housing and geardrive? I want tto got aftermarket mechanical in my 99 tahoe I swapped the 4l80 into because the 3 oem instrument clusters I very gotten out of the junkyards all read way off according to hp tuners...
  16. chevyracer8262

    My 99 Tahoe 4wd build..

    She lives... I finally got all of the powertrain wiring done, then I started modeling and 3d printing a custom rocker switch panel
  17. chevyracer8262

    My 99 Tahoe 4wd build..

    I finally was able to make my new engine run yesterday after fighting sensor signal issues which turned out to be a sensor installation tolerance issue but I'll have more pics to upload soon
  18. chevyracer8262

    My 99 Tahoe 4wd build..

    I did the 0411 pcm swap which has a relay activation wire that I activated and set the Temps in the calibration file
  19. chevyracer8262

    99 tahoe 383 0411 swap no crank position signal

    I found my problem it the crank position airgap I had to machine 0.010" off the sensor mounting flange to allow it to sit deeper into the mounting bore because the block has been line bored which threw the airgap out of tolerance, after installing the sensor after modification the engine fired...
  20. chevyracer8262

    99 tahoe 383 0411 swap no crank position signal

    Hello I've done an 0411 swap on my 99 tahoe using the 02 express van cal and for the life of me I can not get crank position sensor signal, I've measured the air gap which is 0.28", tried 3 different sensors tested the wiring and even changed the wire from the sensor connector to the pcm pins...
  21. chevyracer8262

    My 99 Tahoe 4wd build..

    Updates
  22. chevyracer8262

    My 99 Tahoe 4wd build..

    Finally got a chance to get back to work on my tahoe
  23. chevyracer8262

    My 99 Tahoe 4wd build..

    I'm also waiting on my powdercoater to get bsck in town to get my table coated for my 36" beadroller I'm building as well
  24. chevyracer8262

    My 99 Tahoe 4wd build..

    Well after alot of stuff got in the way I'm finally back on the Tahoe build hard.... Just changed out the entire front suspension and steering components with all Proforged components and upgraded the hid assembles to some heavyduty lifetime warranty Mevotech hubs I got from rockauto. Also...
  25. chevyracer8262

    My 99 Tahoe 4wd build..

    Well Ingot the 14 bolt installed under the Tahoe then Inkinda got a little sidetracked with a power beadroller I've been building to make my dual fan shroud and a couple other small items for myTahoe but its more for the extensive metal fab work I've fmgot to so to my Twin turbo big block 69...

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