I had a post from Steve on Friday night (?) saying on the LY7 which he says has the same timing chain setup as the LLT with tools it could be done in 4.5.to 5 hrs - I would think for timer would be closer to 8 hrs plus. You definitely want to get the cams in the correct phase.In my case, I'll bet $20 I've got the older chains, so the nstall is going to be cleaner if the motor / cradle are dropped - something about being to get up close and personal with your work.