New member here! I've been reading over the forums for a while now without being a member and I've ran into a problem that I have not found much info on and really need some help and insight. I currently own a 2001 c5 and I purchased the car as a roller with the drivetrain still in it. It just so happens that I had a 6.0 lq4 out of a 2000 chevy 2500 that I thought would be great for a turbo build on the car. After the install of the lq4 I noticed that the harmonic balancer was right in the middle of where the steering rack fits. So naturally I assumed that the reason was because of the accessories, so I purchased ls1 water pump, ls1 super damper harmonic balancer under drive pulley, ls1 brackets etc. After installing the harmonic balancer it is still about 1/4 of an inch off and will still hit the steering rack, it has come to my attention that there is a wide and narrow crank flange on the lq4 models from 99-00 could this be my issue as to why it is not clearing? Am I missing something here? I'm stumped and sorry if there is a lack of info or I am not posting in the correct section but this is getting to me and I have no idea why the front of the crank sticks out so far. All of my engine mounts are correct and installed but it is still off.

 

you might have more luck with your question on the LS1TECH forum. Not a lot of guys using iron block engines here.

 

That was my next spot, thanks.

 

Actually I believe you're right with the shorter crank. As I understand it that's why the c5 and cts-v is known to have issues with the balancer walking off. But don't take my word as gospel because it could be wrong. Definitely do more research. Good luck.