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  1. M

    NBS Front Brake Swap for OBS Trucks

    hey guys, back in march i bought a full knuckle/rotor/caliper assembly off of a 2003 2wd. I'm just now (finally) getting time to do this. ive basically forgotten the 29 pages of this thread I read. Can you guys confirm that the only other parts I need are the 2000 4wd Hubs, the reamer, and...
  2. M

    JBA or any Long Tube headers

    I need a GOOD set of 1.75 headers that fit. Shops are saying 2200 minimum for 304, 3000 for 321... Anyone know if there is a 1.750" set from JBA or someone that will fit? Or maybe even 1.875 since it does use some nitrous.
  3. M

    way too rich

    Typical forum poster. Number one im not surprised about anything except fuel trims being maxed out at idle... number two I'm telling you there is a mechanical issue I'm trying to work out so i CAN tune it. Didn't realize asking for a couple of specs asked for a smart ass response...
  4. M

    way too rich

    Lol. My bad . Its a 96 k1500. has a built 5.7 engine from a 98 in it and 411 swapped. 4l60 trans.
  5. M

    way too rich

    My truck, at idle, is pegging both the fuel trims. Bank 1 a bit more than bank 2. The engine is built and i expect Some demand for more fuel but not 75% at idle. Removed the bank 1 exhaust pipe after the collector to replace the trans cooler line and the pipe was very white. It looks very...
  6. M

    GOOD long tube headers? (4wd)

    Looking for Stainless headers that are actually high quality and fit well? (vortec engine) Suggestions? Exhaust is stainless but Im not opposed to non stainless headers with a coating. I just want some high quality headers worthy of tig welded stainless exhaust. 600hp with spray.
  7. M

    O2 Sensor failover???

    Correct. 1 for each manifold, and 1 in the y pipe pre cat b1s3 post cat.
  8. M

    O2 Sensor failover???

    downloaded the service manuals.. found the plug. it was shoved up towards the top of the left side of the engine, under another harness. its a 4 blade flat. so thats done.... lol the plug for b2s2 is closer to where the sensor actually is, and the second sensor i bought is sqaure plugged, So...
  9. M

    O2 Sensor failover???

    Yesterday when i put in the vin.. i oddly saw a sensor "3" line in the data stream selector. Thought it was a glitch. But i just noticed thst the 5.0 had a b1s3. This truck had a 5.0 in it originally. I think that's why i cant find the plug. When the ecm was swapped to the 350 ecm it just...
  10. M

    O2 Sensor failover???

    Mine has the 4 in a row upstream. The square ones are down stream. I have all of them working except b2s1. And the only code i have now is for that sensor. Apparently the ecm will not go into closed loop without both sensors. I drove 40 miles today and got no fuel trim at all. Im going to try...
  11. M

    In need of spreadsheet for 96 tahoe to 411 pcm swap

    Lol. That's hillarious. I'll put a pin out together for you guys this week
  12. M

    12200411 PCM swap for 1996 to 2000 GMT400 trucks

    Does anyone know how to get ahold of lextech?
  13. M

    O2 Sensor failover???

    Ok so...first off...id never hack up a truck like this. I was able to find 3 o2 sensor plugs. On the left side of the truck i found a flat 4 wire plug. Bought a flat four wire direct fit o2 senso . When i plug it in i do see B1S1 come alive on my data stream. Unplug it and it's steady 450...
  14. M

    O2 Sensor failover???

    So im trying to get the wiring sorted. after i have everything working i have a 411 waiting for swap and a buddy of mine has hp tuners. But im still having trouble just getting the o2 plugs sorted at this point. Im gonna make a seperate post about it below
  15. M

    O2 Sensor failover???

    Its run with no sensors for 4 years. Very roughly. Built engine and its not happy. Ill have headers and new exhaust in a few weeks. Thats also part of the reason im trying to get the wiring sorted out now.
  16. M

    O2 Sensor failover???

    I bought a new sensor and the wiring kit to repair it. Im just trying to get it too run closed loop until i get my new headers and exhaust done. I was thinking if i wire b1s1 and leave the other two disconnected it will still trim.
  17. M

    O2 Sensor failover???

    I have no sensors connected currently. And only one hole to put a sensor (until i get my new headers) the wiring Is also damaged so trying to figure out which bank to wire into. It currently just shows codes for circuit failures as no o2 is present.
  18. M

    O2 Sensor failover???

    If one of the upstream sensors fails, will the ecm still trim based on the other sensor? 96 k1500.
  19. M

    No Ignition pulse to coil (or ignition module)

    I pretty much did exactly what that thing said, just from memory. the only thing i might of done wrong is checked the pcm to ignition module signal wihtout the IM being plugged in. I will check it in the morning, but I already know im not getting signal out of the old or new ignition module by...
  20. M

    No Ignition pulse to coil (or ignition module)

    Hey guys, I have a no spark condition on my truck. 96 k1500. 5.7. the coil and ignition module both test good, but i stuck a new module on it just in case, to no avail. After inspection, I found that the signal wire going to the coil does not pulse at all. in fact it does nothing. I...
  21. M

    Design and build throttle body

    Sorry for Not posting lately guys. I've been tinkering with the port shape In CFD and getting some weird results. Seems to be due to the shape of the oval ports. It appears that the oval will have to be bigger at one end than the other. I'll keep working in it. I have decided for now to leave...
  22. M

    Design and build throttle body

    I think i follow what your saying. ill put a collar above the TB that has a slot cut for the MAF, and the MAF will stick out into the air stream. Only problem i see, is that the air flow comes from the side in a round element, so there wont actually be that much flow over it.
  23. M

    Design and build throttle body

    IM not sure I follow exactly where you think I should put the MAF. a sketch would help if you have time.
  24. M

    Design and build throttle body

    You mean put it In the center? Like in front of the air cleaner bolt? That could work, id have to make sure it had space under it to flow through. I wish i could just get a long hot wire.
  25. M

    Design and build throttle body

    I dont. thats just the effect this intake is going to have. im not going for high end power, Im going for mid range torque. this design will probably lose a couple up top. but Im betting it will make more torque than the same intake on the same engine with a 4 barrel on top (or to compare...

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