2005 LM7 noise
Thread Starter
Teching In
Joined: Jul 2013
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2005 LM7 noise After watching some other peoples videos want a second opinion or two. Engine was out of an 05 Tahoe with supposed to be 89k on the clock. Engine sat in my shop for around 2 years because my son ran out of money for the swap into his 84 C10. We got it running a couple weeks ago and let week got the exhaust and cooling system working. When cold no noise, but as soon as it gets to operating temp the noise in the video starts. I have tried spraying cleaner down the push rods and even ran a bottle of engine flush through it, no change. Fresh oil and AC Delco filters.
Thread Starter
Teching In
Joined: Jul 2013
Posts: 5
Likes: 0
I'm thinking lifters too, but why would they be fine when its cold, and only start ticking when it gets warm. I want to do this once. Was looking at the factory service manuals and other sites and what are the chances that it needs the o-ring on the pickup tube replaced. Debating on pulling it back out and replacing the pan gasket, oil pump and lifters, but if I have it back on the stand doing a cam swap at the same time might cross my mind, just don't want to start a tuning nightmare.
