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  1. Mechanic421

    Recommendations for lower arm replacement on lifted hoe?

    Summit racing and rock auto
  2. Mechanic421

    Firestone Destination LE 2

    I had a set on my 99 suburban. I think 15s though. They were fine no issues.
  3. Mechanic421

    Lq4 rering

    How about fuel economy?
  4. Mechanic421

    Lq4 rering

    No milling , changed to lq9 piston and stock rods are 6.098 and new rods are 6.100 over 10:1 probably close to 10.5:1. No real goals but thinking with with cam,8.1 injectors ,1 3/4 primaries bbk drop in headers and black bear tune thinking maybe 400ish. More of a towing engine really.
  5. Mechanic421

    Lq4 rering

    Ok so Roger Vinci handles customer service personally. Very helpful ,lifter on the way.
  6. Mechanic421

    Recommendations for lower arm replacement on lifted hoe?

    Don’t use mevotech, maybe ttx are ok. Really hit and miss. Definitely not sway bar links and mounts. I have used a lot at old shop boss man was cheap. I have moved to proforged.
  7. Mechanic421

    New here

    Nice, welcome
  8. Mechanic421

    2003 yukon problem..door lock issue

    Have you got to door open yet? I have not hacked in our generation truck yet. I had a 07 Escalade (customers)I could roll to window down and 1/4” brake line and hit the latch to get door open to replace latch,cable and if I remember right inner door handle. But not sure about inner some are part...
  9. Mechanic421

    Cam Swap Question

    Which engine? 4.8,5.3,6.0,6.2 roll engine over with no valve train and trays hold lifters up. And you can change out cam. But old school small block remove intake to remove lifter.
  10. Mechanic421

    Lq4 rering

    GRRRR so #8 exhaust lifter stuck won’t compress! Holding valve open checked like 3 times,it is in the cup. Binding the spring have call and email out to Vinci still waiting. I have pressure on it hopefully it will collapse.
  11. Mechanic421

    2008 Denali XL possible ECM Failure?

    So you have tried to command manually in tests/functions test and no response? Sometimes in efilive you have to have it on in two different places. I am not really all that great at computer shit but I get by. Hopefully someone smarter will chime in. But if you can command fuel pump check output...
  12. Mechanic421

    2008 Denali XL possible ECM Failure?

    Is there fuel pump duty cycle or maybe command data ?
  13. Mechanic421

    2008 Denali XL possible ECM Failure?

    Can you post a screen shoot?
  14. Mechanic421

    2008 Denali XL possible ECM Failure?

    So do you have any way to read data on a scanner? Really need a scantool.
  15. Mechanic421

    Lq4 rering

    More money for more parts! Never enough like a addiction! I do have to shoot out to the wife she never complains about about the over kill.
  16. Mechanic421

    Aftermarket 6 speed

    All I know is circle d would not hurt to call also.
  17. Mechanic421

    Aftermarket 6 speed

    So I believe it was a 3.9 Isuzu mechanical injection we sent to them. We sent them a complete running engine less accessories . It ran ok but would misfire and smoke pretty good on cold start then clear up for the rest of the day. I believe it had a bad injector . It did always run warm on the...
  18. Mechanic421

    Aftermarket 6 speed

    I have had problems with jasper ,with a $15,000 diesel twice same engine! Never again!
  19. Mechanic421

    Lq4 rering

    Did not have time for assembly pics but just waiting for pushrods,trunnions,knock sensor and knock sensor harness. So everything is standard lq9 pistons ,ring gap spec out good. Scat rods ,polished the crank and balanced. Vinci 554 cam,Vinci double valve spring kit and Vinci lifters .hexajust...
  20. Mechanic421

    2004 Yukon Denali Awd Leveling Kit Issues

    You may want to check front end well before alignment for any worn parts. My torsion bars are turned up pretty good and 285/70/17 and drives awesome ride is not bad but not stock Denali ether. With the trailer it rides pretty good.some pics I took today.
  21. Mechanic421

    Circle D

    So I have to give a shut out to Circle D. I am running a lot of bolt ons except my transmission and 300mm 2200-2400 Circle D converter (4l65e) almost 12,000 lbs with trailer.Now I know a lot of you guys don’t like the 4l60 style transmission! But I now have about 50,000 of a lot of towing,drag...
  22. Mechanic421

    Lifter Replacement

    5.7 r code yes it will come out. Just watched you tube video. Just been a long time since I have been there.
  23. Mechanic421

    6.0 conversion questions & Socal machine shop recommendation

    Trail blazer intake
  24. Mechanic421

    6.0 conversion questions & Socal machine shop recommendation

    Was looking at them on rock Auto like 133ish
  25. Mechanic421

    03 Yukon slt awd with 4 low

    I have a customer with a 05 Tahoe with that setup.

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