6.0 ls rocker arms clatter

[Joyridin]

Originally Posted by bigdaddy4x4

i pulled the engine apart only thing i could find wrong was that all of the lifters were collapsed i dont why they all failed but they did going back with some other brand delphi or elgin

What is your oil pressure? I have heard of a lot of junk lifters these days, but rarely do you hear that they are all collapsed.

As stated previously, I would go with Morel of Johnsford. They both manufacture their own lifters and stand behind them.

[clay68c10]

Originally Posted by Joyridin

What is your oil pressure? I have heard of a lot of junk lifters these days, but rarely do you hear that they are all collapsed.

As stated previously, I would go with Morel of Johnsford. They both manufacture their own lifters and stand behind them.

Ya, I suspect you have something else going on. Some further diag is going to be needed unless you want to keep throwing $$ at it.
Have you researched over at ls1tech? Lots of info there.

[AussieinNC]

This sounds a lot like a missing or defective oil gallery dog bone...the factory ones are made of plastic and sometimes fail, resulting in oil bypassing the filtering process and upsetting the oil flow throughout the engine.

The dog bone is located in the main oil gallery, drivers side of the engine, accessible under the rear main seal retainer....

See link for a video explaining its role....

https://www.youtube.com/watch?v=V7p0h2VwGP0

[bigdaddy4x4]

Originally Posted by AussieinNC

This sounds a lot like a missing or defective oil gallery dog bone...the factory ones are made of plastic and sometimes fail, resulting in oil bypassing the filtering process and upsetting the oil flow throughout the engine.

The dog bone is located in the main oil gallery, drivers side of the engine, accessible under the rear main seal retainer....

See link for a video explaining its role....

https://www.youtube.com/watch?v=V7p0h2VwGP0

yes i removed the old one and it was good put in the new one no change in oil psi got the block at machine shop to get new cam bearings they still looked good but i wont know until i put it back together going back with a new btr camshaft and stock sbc roller lifters and stock beehive .560 valve springs

[bigdaddy4x4]

Originally Posted by Joyridin

What is your oil pressure? I have heard of a lot of junk lifters these days, but rarely do you hear that they are all collapsed.

As stated previously, I would go with Morel of Johnsford. They both manufacture their own lifters and stand behind them.

my oil pressure was normal at 35-40 psi with the factory lifters when i swapped to the new ls7 lifters oil psi was only around 20 psi every time i measured for longer push rods there would be no lash but as soon as i restart the engine the lash comes rite back i went from the factory 7.400 to 7.550 with no luck stopping the lash