Chevy and GMC Duramax Diesel Forum banner
  • Hey Everyone! Enter your ride HERE to be a part of this months Ride of the Month Challenge!

lb7

  1. Duramax Engine Swaps
    Hello, i have a 02 LB7 Complete parts truck. i want to swap it into my 2005 GMC Duramax, what am i looking at needing for this? the LB7 is freshly rebuilt bigger injectos turbo mods headgaskets, etc no blow by. what's the easiest way to do this swap? and what will i need
  2. 01-04.5 LB7 Performance Parts Discussion
    I’m sure there’s a thread started on this but can’t seem to find a decent one. My buddies want me to go to the track with them (all have 13.5-15.0 cars) because they haven’t been before and I have. Instead of bringing my 11 second corvette I was thinking about bringing my duramax and possibly...
  3. 01-04.5 LB7 Duramax Powertrain
    Hey guys, yesterday i was headin to work in my 02 duramax and my truck revved up and i think it came outta 5th gear and into 4th and the service engine light came on. I was going about 65 on cruise, and i hit the gas to accelerate to go around this car and thats when it happened. Any ideas? to...
  4. 01-04.5 LB7 Duramax Powertrain
    Hello fellow dmax owners. I recently bought a 2002 Lb7 duramax with the zf6 transmission in it. While tearing into the motor I noticed that majority of the push rods were bent. I checked the cam gear pin and the crank and they are both in good shape. Could the valvetrain failing cause all the...
  5. Looking For/ Wanting To Buy
    Looking for an intake for my lb7. Would like to find a wc fab but let me know what you've got
  6. VIN Check
    Hey guys, happy to be apart of the duramax family. Ive owned a couple 2nd gen cummins but now got into a duramax lb7. Its a 2003 body, interior is great shape, lots of new parts and has had work done but i saw some posts about being able to vin check to see a bit more what's been done. I know...
  7. 2001 - 2007 (GMT800) Non Powertrain
    So I just bought an LB7 about a week ago and the key fob doesn’t work. Anyone know the FCC ID on a 2004 LB7 fob? I can’t find it anywhere and mine was rubbed off by the previous owner.
  8. Performance Upgrades
    So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...
  9. Drivetrain
    So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...
  10. 01-04.5 LB7 Duramax Powertrain
    Been browsing this site for a while now looking into my lb7 from when i bought it to now, different story though. I had a fully reman’d long block with 45% sac injectors from LDS installed around 8500 miles ago or so, inj hold down for #6 I believe came loose after a moderate pull after about...
  11. General Discussion
    If I wanted to upgrade my turbo, what should I look into? Also, what other caveats/upgrades should I be aware of/look into?
  12. 01-04.5 LB7 Duramax Powertrain
    Hey everyone new to the forum, Recently purchased 2nd duramax (04 LB7 with 146k, Cali truck) after owning a lbz previously. Having issues starting. Truck sat for about 4 years in my brothers truck yard but ran great beforehand. Fired right up first day we pulled it out but now seems to have a...
  13. General Discussion
    Hey everyone, New to the page, recently purchased my second duramax (2004 lb7) and have been going through it getting ready for the road as it was sitting for quite a few years. This might be a silly question with a simple answer, are the front calipers larger than the rear? I purchased...
  14. Gauges, Electronics and Wiring.
    i traded the truck for my 03 6.0 its a 2002 GMC SIERRA 2500 crew cab short bed. the radio didn't work so i pulled it out and took a look at the wiring only to find half the wires weren't even hooked up. after rewiring the radio it worked fine for a day ish. i went to my local reservoir for some...
  15. 01-04.5 LB7 Duramax Powertrain
    Hey all, I’m new to this forum and new to duramaxes. I just purchased a 2001 Chevy duramax with an lb7 and a-1000. Trans was bad so swapped a new one over the weekend and all is well. Since purchase I’ve noticed a few problems. - occasionally cranks a little longer than I would expect, still...
  16. Interior
    So my truck is duramax swapped, and my cruise control doesnt work. I read somewhere that for the swaps, you have to take a few other harnesses off the donor truck for things like the accelerator pedal, and the wait to start light, and also the cruise control. The accelerator works fine, and i...
  17. General Discussion
    I need help with my duramax. It’s a 2003 GMC Sierra 2500hd. I started rolling coal one day (stock truck) and with the already hazy exhaust smoke, I knew that I had dropped an injector. I let my dad test drive it and he must have pushed it past the edge as it starts knocking and blowing out...
  18. 911 Problems Forum
    Im new this seemed like the best place to post as I've been tackling it for months. I'll try to keep it short Bassicly trucks at 620xxxkm shes beat the fans owned it since 05 n I'm trying to do it cheapest way possible Bought "new" trans (330xxx) , just did trans, still in limp...I RODE IN THE...
  19. 01-04.5 LB7 Duramax Powertrain
    I am worried that my injectors may be bad. The truck has a lot of white smoke at idle. There are no lights on the dash. There is no knock. There are no other signs that they may be bad other than a lot of white smoke. Ive only had it a day. I dont know about them a hole lot. It was $8000 and i...
  20. 911 Problems Forum
    Got a LB7 bought refurbished injectors from injectorsdirect.com last weekend got on the truck hard one time and now I have a fuel knock on cylinder number 7 I know this because I took my scanner and commanded each injector off and when I got to number 7 the knock went away has anyone bought...
Top