5.3 LS Top End Noise

[FED 387]

For whatever it's worth Melling lists 2 pumps for that engine M295 and M295HV. The HV pump flows 18% more oil and is recommended for high mileage vehicles to quiet valve train noise. Might try that before you tear into doing lifters etc not saying it will solve your problems but a lot easier than pulling the intake etc---Fed 387

[TommyPettigrew3076]

Are you sure it isn't an exhaust leak ? These motors are known to for the manifold bolts to break of mostly on the very back . I had this same problem chased it lifters , flushed , different oils turns out that is what it is they even make a kit to fix the problem I found through a buddy of mine that had the same problem I will try and find the

linkhttp://kralautoparts.com/product/exhaust-manifold-bolt-repair-kit-kap169

[brian schuetta]

Will look into the exhaust leak potential. Haven't heard the noise in a couple days, which is a good thing, unless you are trying to find out more about the problem. I'm trying to look at all the possible causes for this before I do anything too involved. Thanks for all the input guys.

[John Kissel]

Brian, Take a look at Dorman #917-107 & #917-142 exhaust manifold clamps, they do work.John Kissel