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  1. GMstrong

    Extremly confused, NEED HELP!

    its a 350 run it till it blows,then throw another one in.300 bucks at any junkyard nowadays.
  2. GMstrong

    Magnaflow Spun cat review.

    If any of you guys have the 99-up nbs and have longtubes you probably know how hard it is to fit in the cats without having to get custom ypipe made well i didnt,I just bought 2 3 inch magnaflow spun cats which are about 9" total length and band clamped them out to the longtubes then reduced the...
  3. GMstrong

    1999 bucket trucket L21 question

    Id do full tune up,plugs,wires,etc then replace that air filter with something better flowing like a afe/k&n,it looks the same air filter I had on my c2500.Also Id clean the throttle body.Not sure what kind of exhaust system they have but due to its size probably has a muffler the size of a 275...
  4. GMstrong

    1996 k1500 runs terrible when cold after long tube install!!!

    Well obviously its something you messed during the install,so just go over everything you did,Also scan it even if you don't have a ses light on.You could of easily but a adapter to extend the o2 wires.
  5. GMstrong

    timing question

    Replace the coolant sensor.If it runs good cold I doubt its the timing.
  6. GMstrong

    I love the shorty headers on my '94burb. I know. I know.

    Well anyway you look at it the shorties are 100% better then the manifolds,i noticed a difference on my tbi with the shorties.I can only imagine the gain with the longtubes.
  7. GMstrong

    exhaust help.....

    Id run new 2 1/2 pipe from the headers with an xpipe no cats and the bassani's.
  8. GMstrong

    Tax Time = TIME FOR SOME UPGRADES!!!

    I don't think the intake would be worth porting or buy aftermarket on a stock 5.3L,after headers,cam then I would do the intake and no doubt would gain a good 15+hp.
  9. GMstrong

    What muffler/exhaust system are you guys running?

    12" bullet,Get a one of these http://www.summitracing.com/parts/jex-u6-6/overview/ ,not sure what year you got sounds like you a 96+.
  10. GMstrong

    Anyone heard of full boar mufflers

    I don't understand why a flowmaster 10 would be louder then the cherry bomb extreme when internal they are the same.Personally id run a straight through muffler like a dynomax bullet.
  11. GMstrong

    350 5.7 tbi stalling New everything from the ground up!! bash my head please!

    I would check the timing like stated,also check for vaccum leaks.If you didn't already I would re torque the intake manifold bolts
  12. GMstrong

    want to replace Cat

    I agree with great white the magnaflow is a great cat,helped my 300k tbi get there emission inspection.
  13. GMstrong

    Considering dong an LT4 Hot cam

    I just hope your not using stock poppets.
  14. GMstrong

    Considering dong an LT4 Hot cam

    go for it.I would use atleast a 2600 stall though.
  15. GMstrong

    Straight pipe or glass pack in place of muffler?

    please no flex pipe on a chevy or gmc anything else go for it!!
  16. GMstrong

    Considering dong an LT4 Hot cam

    a guy on youtube did this but to me seems like the truck lost all low end torque,especially with your truck being lifted Id look at the vinci trucker cams.or a low duration cam http://www.youtube.com/user/kerobinsonii/videos
  17. GMstrong

    Good LT hedders for my 5.7 4x4 NO cheap-Os

    most use hedman or hooker,pacesetter,The summit racing headers are cheap and are actually pacesetter's.Just remember you get what you pay for.I use replacement manifold gaskets.
  18. GMstrong

    Straight pipe or glass pack in place of muffler?

    I ran them on my obs 2500 with the vortec 350 sounded very good and it still had the stock cats I had them dumped I have exhaust videos of it look at my youtube.
  19. GMstrong

    Ceramic coated headers worth the extra $

    they are well worth the extra money.
  20. GMstrong

    Straight pipe or glass pack in place of muffler?

    dynomax bullet.
  21. GMstrong

    Cracked 1989 Frame Options- with pictures!

    how does the rest of the frame look?might not even be worth it.The metal doesn't even look strong enough to get a good weld on it.
  22. GMstrong

    Catalytic converters

    that thing is too quite!!just kidding sounds good,I would just run high flows just to pass inspection
  23. GMstrong

    Cold outside = stumbles at idle and under load. WTF?

    check the map sensor as well,
  24. GMstrong

    1999 Tahoe 5.7L random misfire

    if the dis cap is in good shape and the gear is not wore down then I would replace the injectors.
  25. GMstrong

    Deleting o2 and cat question

    I don't think the tbi or any obd1 car/trucks car about cats.since they don't have o2 sensor after the cat.

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