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Gary, Australia Car Mechanic
Category: Australia Car
Satisfied Customers: 1185
Experience:  Senior Technician
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Occasional lifter knock ls1

Customer Question

occasional lifter knock ls1
Submitted: 1 year ago.
Category: Australia Car
Expert:  Gary replied 1 year ago.

Hi there,

LS engines are prone to roller lifter and cam lobe failure.

I would get the car inspected by a good Holden tech, or LS tuning shop, that does cam/lifter changes.

Cylinder heads have to come off to replace lifters.


Customer: replied 1 year ago.
the ticking noise is sporadic at best have been suggested slightly longer pushrods to set preload on lifters
Expert:  Gary replied 1 year ago.

If the engine is stock, then you probably have the start of intermittent roller lifter "tick", that can be saved.

Unfortunately, it is engine out, heads off type job.

My recommendation is to replace all the factory gear with aftermarket parts: cam, lifters, guides, pushrods, rocker arms, retainers and springs.

The factory springs break, the factory roller lifter wheels gall on the cam lobes, from seizing up on their axles.

They have enough lifter preload from factory.


Expert:  Gary replied 1 year ago.

Hi again,

Do you need any further assistance?

I have built many V8 engines including LS1 onwards.

A crate engine is also sometimes cheaper in the long run.