Ticking noise

[GasGuzzler]

It's not a rocker unless one came off all the way. Rod bearings are hard to diagnose from the outside so don't get that stuck in your head. I have yet to see an LS spin a rod or a main. Not saying it can't happen but.....I've seen oil pump problems, cam problems, lifter problems, and even a busted piston (see pics from last month).

[Justin_Inc]

It's not a rocker unless one came off all the way. Rod bearings are hard to diagnose from the outside so don't get that stuck in your head. I have yet to see an LS spin a rod or a main. Not saying it can't happen but.....I've seen oil pump problems, cam problems, lifter problems, and even a busted piston (see pics from last month).

Rod bearings are usually not too bad to diagnose, start the engine, rev to 2000-2500 and hold steady then goose the throttle, if you get a few loud bangs in there while revving (louder and deeper than its normally like) then you can prettymuch bet its a rod bearing. If you cannot tell from that, do the same thing only in gear, hold to 2000rpm against the converter and goose the throttle, with the engine loaded the rods will clang fuggin loud if its failed.

Why not pull the pan on the 4.8 and check it?

[ff_jeff]

Rod bearings are usually not too bad to diagnose, start the engine, rev to 2000-2500 and hold steady then goose the throttle, if you get a few loud bangs in there while revving (louder and deeper than its normally like) then you can prettymuch bet its a rod bearing. If you cannot tell from that, do the same thing only in gear, hold to 2000rpm against the converter and goose the throttle, with the engine loaded the rods will clang fuggin loud if its failed.

Why not pull the pan on the 4.8 and check it?

I agree. pulling the pan isn't that hard. And if there are bad ones you can be certain.