Cam question

[Hotrodbuick]

Took the cam out of my motor today and it is a hydraulic cam. The question I have is that on the front of the cam it has the thrust washer bolted to the block holding the cam in but it also has the button on the front. Do you need both? I thought you only needed the button when running a roller cam? Because the button wore a pretty good size groove into my timing cover.

 

[IhaveAcarSickness]

i have a 85 dont know if the cam was changed but it has a cam button when i took off the front cover

 

[Hotrodbuick]

Did yours also have the thrust washer holding the cam in place or just the button?

 

[IhaveAcarSickness]

 

[IhaveAcarSickness]

sorry i put those pics on the wrong board lol uh ya i think i did

 

[IhaveAcarSickness]

i should be ripping apart the outher engine in a few days i will let u know what it looks like i cant really remember if it had the thrust washer or not..

 

[Hotrodbuick]

Ok thanks. Just confusing as why it had both an wore a groove in the timing cover

 

[Hotrodbuick]

No one else has input on this?

 

[blackgn1]

Wear on the front cover is normal. I have seen very few covers that didn't have a nice round groove. I have seen alot of covers.

 

[IhaveAcarSickness]

pulled that outher engine apart and does have a button lots of grooves but no thrust washer mine came right out after i took off the timeing chain .....cam was shot and the lifters

 

[Hotrodbuick]

Thanks for the replies. So the groove is normal and supposed to have the button. Still wondering why it has both on mine. Hmmm