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  1. M

    Lly/lb7 rebuild

    If I throw a set of aftermarket rods in do I need to send this rotating assembly back off to be rebalanced? Sent from my SM-N986U1 using Tapatalk
  2. M

    04 zf6 fuel knock

    Bringing this back up. Just thinking tonight the batteries have always been dead when I worked on it. Could one of the batteries be shorted out cause a voltage issue either with ecm or ficm? Still no codes that I've come across. But just curious. Thanks Sent from my SM-N986U1 using Tapatalk
  3. M

    Lly/lb7 rebuild

    Oil cooler debate? Go as new as 24? Or is there one that is a better replacement? Water pump? Welded merchant or can I run a standard part store or gm pump? Would like to put this stuff in there then leave it for a few years. Plan to do the van thermostat housing since I want to run twins...
  4. M

    Lly/lb7 rebuild

    Whats the power range that needs main studs? Sent from my SM-N986U1 using Tapatalk
  5. M

    2021 3.0 dash messages

    Hey guys. I have a 21 pickup with the 3.0 that has mileage count down and the service emissions message on the dash. All codes in ecm are clear. Only shows permanent codes in obd2 side of the snap on scanner. Anyone have any clues to tricks to get these codes to go away? Thanks Sent from my...
  6. M

    AC warm at idle

    So truck is on motor #2 so I've been into it a time or two. Cooling stack has been washed but its been a few years. So ill do that. Fan hub has been upgraded to like the topkick hub maybe? Regardless it's been changed. But I will start with a blow gun and checking the charge. Thanks guys Sent...
  7. M

    AC warm at idle

    So I have a 06 3500 crew cab. Had heater core snd evaporator replaced last year. But this year getting into summer time my air will blow warm at idle. Get out on the road and it cools down within half a mile. I'm wondering if an added electric fan on the front to push air would help? Or go ahead...
  8. M

    04 zf6 fuel knock

    No codes. Have not ice picked anything though. Sent from my SM-N986U1 using Tapatalk
  9. M

    04 zf6 fuel knock

    I got a new set of batteries for this rig last week. Plan to pull it bavk up to the shop. Thinking ahead could it have a broke crank? Causing the fuel knock and black smoke? Other than those it runs smooth and does my make any noises. I'm going to probably do a little digging but then try to...
  10. M

    Lly/lb7 rebuild

    Truck has been down since Thanksgiving of 22. More than anything I wanted to just throw this lower end in it and get it running so I had another truck to rely on and drive to haul kids. But it's been this long wouldn't hurt to take a little longer i guess. Sent from my SM-N986U1 using Tapatalk
  11. M

    Lly/lb7 rebuild

    I have the stuff bought to build a motor. Balanced stock crank, lbz rods delipped lb7 pistons fluid damper and bd flex plate. With a new stock cam. Would I be better off just doing that and not trying to rering this motor? Just use the block and build it with these parts? Also main studs...
  12. M

    Lly/lb7 rebuild

    So my lly cracked a piston I'm assuming. (Haven't pulled out or apart) but it blew the oil gill cap off the engine when it went. So I bought a lb7 engine to use for the short block. Unknown miles just told the cp3 was bad so the guy parked it. Pulled heads and the cylinders look good. Just...
  13. M

    Stroker pump differences

    So I have a 10mm cp3 that came from (big name fuel company). Was on a customer's truck and was leaking fuel to the valley. Lift pump pressure not return or high pressure. So customer decided to swap cp3 after talking with them. So I sent one of my stock cores in and kept the 10mm pump. Thinking...
  14. M

    04 zf6 fuel knock

    Bringing this back up from the dead. Looks like o own the truck now. I ran compression test before and want to say it was in the 350 psi range but I cannot gurantee that. So I plan to get it running to pull balance rates again and then Check compression. I've seen guys say check it hot vs cold...
  15. M

    Gasket opinions

    I had my parts guy at gm order a pair of gaskets. Said acouple days to get them. Are they not a good option? I'm not really on a time crunch but I would like to have it together by spring. Truck has been down a year and I've been jumping from truck to truck this year and I'm tired of it. So im...
  16. M

    04 zf6 fuel knock

    Compression test is next in line. But let me just throw this out there to make sure I'm not missing anything. No blow by. Zero. So that tells me the cylinder walls and rings are still intact rite? No noise in intake or exhaust to give me a feeling that it has a bent, burnt or broke valve. I'm...
  17. M

    04 zf6 fuel knock

    Using a snap on Solus scan tool. I believe it actually kills the cylinder number that you select from my experience. But I will definitely pay closer attention to that tomorrow. Sounds like it's coming from the driver side. Sent from my SM-G991U using Tapatalk
  18. M

    04 zf6 fuel knock

    Hey guys. Got a 04.5 lly 3500 with the zf6 manual trans. Came in for fuel knock/miss and excessive black smoke. So ran cylinder cut out and found #6 had the knock. Kill the cylinder it goes away. Balance rate was a +8. Every other cylinder was +/- 3-4. So figured there's the problem. Changed #6...
  19. M

    02 lb7 eating ficm

    We had it tore apart the last 2 weeks putting front end parts in it. Went to crank it and it had blowed the fuse. It's weird for sure. But ill look into it! Sent from my SM-G991U using Tapatalk
  20. M

    02 lb7 eating ficm

    We bought truck new in 02. Put injectors and gaskets on it at 70k miles. Ran it to just about 150k and put another set of injectors in it. We used the good ole cheap d-tech from xdp because we had bought them for a customer and then he decided he didn't want them. So we thought why not? Seems...
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