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Hydraulic roller lifter

Gulfcoastcowboy

By Gulfcoastcowboy
in Ask A GM Technician

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Gulfcoastcowboy New Member

Gulfcoastcowboy

Posted
Posted

Ok so when you have to change a lifter you have to pull the intake and head but do you have to replace the head gasket and also what about the head bolts

 

swathdiver Senior Enthusiast

swathdiver

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Posted
37 minutes ago, Gulfcoastcowboy said:

Ok so when you have to change a lifter you have to pull the intake and head but do you have to replace the head gasket and also what about the head bolts

 

Absolutely!  You must do that and the would be well advised to replace the intake gaskets as well.  Is this an AFM repair?  If so,  it is SOP to replace the VLOM as well.

Jsdirt Senior Enthusiast

Jsdirt

Posted
Posted

^^^ What James said. It's ALOT of work compared to the way things used to be, so replace EVERYTHING you can while in there.

 

Make sure you inspect that cam CLOSELY - if there are ANY markings on any of the lobes, or even the base circles, get another cam. I'd also highly recommend doing ALL the lifters ... and I'd highly recommend doing an AFM delete, if you plan on running this engine for a long time.

 

These engines have bit more people than I can count by just replacing the failed lifters ...

Doug_Scott Senior Enthusiast

Doug_Scott

Posted
Posted

Of all the gaskets used on an engine, the head gasket is always replaced, every time.  As for head bolts, if they are torque to yield, replace them.  Anytime I saw a torque spec with a "plus x degrees" after the last torque value given, it got new head bolts.  Not worth the risk when you work under flat rate and have to eat the labour on a comeback.

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