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  1. Biggin0822

    The swap started today.....

    So the tranny issue was fixed when I unplugged the harness to the trans and plugged it back in Works perfectly. Ran a 13.2 at the track (remember when I wrote that I would never go to the track?) Now I took the hvac system out of the truck to fix the vacuum lines that switch the vent doors...
  2. Biggin0822

    What the heck is this??

    Thank you! Since I swapped in a lq4 I think I can rip that esc out.
  3. Biggin0822

    What the heck is this??

    I am working on refurbishing my heater controls, heater box, and etc and I found a metal "box" above the heater box and mounted to the under side of the metal dash. It has an electrical plug connected. What is it? I'll take a pic if no one knows off the top of their head
  4. Biggin0822

    Lesson learned from the first time ever at a track.....

    There is a setting in hptuners under the "speedo" tab that lets you raise the fuel cutoff speed from 98 to 256. I kept getting fuel cutoff just after 1000 foot mark and coasting to the 1/4 mile mark. 14.6 @ 85mph lol My 1000 foot was 88 mph. Found the speed limiter after I got home.
  5. Biggin0822

    4l80e lost first gear and o/d

    Getting a parts list together to rebuild the tranny and I decided to pull the plug that goes to the transmission from the wiring harness (the big round plug)and re installed it. Also I made the coolant fan that’s right inline with the trans cooler run all the time that the truck is running...
  6. Biggin0822

    4l80e lost first gear and o/d

    second third and 4th are ok. just no overdrive or first. I'll probably end up rebuilding it myself. Well, Youtube and I will do it. full computer from the donor truck.
  7. Biggin0822

    4l80e lost first gear and o/d

    Trans shop said that o/d slips and that causes it to shut down the “1st/ OD” solenoid. Anyone ever hear of anything like this? I put some Lucas oil trans slip stuff and it was fixed for about a week. Thought i was out of the woods because it would work fine until it warmed up (still does). So...
  8. Biggin0822

    Wheel hop

    OK so I picked up a pair of used "slapper bars". Guy on craigslist had the truck (longer) version. I'll report back when the monsoon stops and I can get them on and get out there
  9. Biggin0822

    Wheel hop

    OK so no wheel hop on wet roads. The driver side of my truck is about 2inches lower than the passenger side. Might be some spring issues there. leaf springs look and feel tight, no obvious issues. Without spending more than $200 is there a good traction bar solution?? Cal tracs are...
  10. Biggin0822

    Wheel hop

    Awesome discussion! Thanks for all the info. I'm gonna check leafs shocks pinion angle and it just rained all night so I'll try to see if if hops wet . The engine is an lq4 6.0 with a cam and headers .
  11. Biggin0822

    Wheel hop

    Old: 3.08 open diff New 3.73 positrac I installed the diff and gears and then drove easy for a while (break in?) then went out and blew the shine off the tires (no hop just AWESOME) during the 4th "smoke release" it hopped and has done it ever since. My ear and butt are always monitoring for...
  12. Biggin0822

    Wheel hop

    I put in a new diff and gears and now I have wheel hop bad. Seems too coincidental to blame it on anything else? I don't know if a loose pinion nut would cause that somehow?
  13. Biggin0822

    1979 K20 5.3 Swap

    I don’t have a pic looking down but they clear the frame perfectly. There is only one “ear” on the bell housing that needs to be removed. Death wheel and 2 minutes is all you need
  14. Biggin0822

    Son of a @$$#&+-$#@!!

    Ya I bfh'd that thing for EVER. LOL. It turns out it was one of the gears that was really stuck on there. But I am REALLY LOVING the new diff and gears. So much more fun to drive. Burnouts for distance are a lot more satisfying as well!
  15. Biggin0822

    Son of a @$$#&+-$#@!!

    Retaining bolt broken and tried for a lonnnnng time to get it out. This housing was one piece. Couldn't disassemble. It was a 3.08 open diff
  16. Biggin0822

    Son of a @$$#&+-$#@!!

    Spent 4 hours getting the center pin out of my Gmail 12 bolt. Swapping in a 3.73 gear set and lsd. If you look close you can see the Carnage. Used a death wheel to cut the carrier in half and it still wouldn't come out until I cut the gears in half as well!
  17. Biggin0822

    Using the 98 Camaro 3wire coolant sensor, pcm 40 Degrees hotter??

    How do you do that?
  18. Biggin0822

    1979 K20 5.3 Swap

    FWIW I did the speed engineering long tubes for $269 and I thought it was a steal for the quality and fit. There is one “ear” on the passenger side bell housing on my 4l80e that had to be massaged with a “death wheel” but other than that they are great.
  19. Biggin0822

    Using the 98 Camaro 3wire coolant sensor, pcm 40 Degrees hotter??

    Brand new speed hut gauges and using the above sensor so that 2 wires can go to pcm and one wire to the gauge. Gauge usually reads 158 and pcm reads 198. Any ideas?
  20. Biggin0822

    Assuming LSD needs to be rebuilt.......but......

    Ya it is lsd because straight line burns were not a problem before. And an open diff would not spin both tires while turning left. Or right or straight for that matter. Pretty sure my 1/2 ton 305 (originally) didn’t come with a 12 bolt posi but I’m sure it came with a 10 bolt open diff. I’ve...
  21. Biggin0822

    Assuming LSD needs to be rebuilt.......but......

    So when I take off straight or turning right, My gm12 bolt is a peg leg. but when iturn left I can kick the tail out nicely. I've never rebuilt a lsd but it can't be too hard. Can it? What are the pitfalls?
  22. Biggin0822

    The swap started today.....

    Ya. I have every gear except 1st and od. First does work when it's cold. Like first thing in the morning cold.
  23. Biggin0822

    The swap started today.....

    Sorry, been a while since I've been on the forum. No, Ive not seen the speedo not work because of obstruction or anything else. And I haven't pulled off my (your) "bumper thingys" yet. Still snow and ice up here in Michigan. sucks. I've found since I wrote my last post that my tranny is...
  24. Biggin0822

    The swap started today.....

    After dozens and dozens of burnouts my posi trac needs to be rebuilt. I think I’ll change the gearing to a 4.10while I’m at it. I’ve got speedhut gauges that have a gps speedo and it can do 0-60 times and 1/4 mile runs. Best I’ve done on 0-60 is just under 7 sec. Alittle disappointing, I...
  25. Biggin0822

    LS swap questions

    I got the hptuners and did my own vats delete and have been messing with the tune. I know NOTHING about tuning a vehicle but with all the "tune repositories" out there, I've been able to find one that makes the truck run very well even with a lumpier cam and long tubes. I just had to adjust the...

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