[jakejake1966]

What size spacer or wear/thrust plate is needed on a big block chevy? are they required? What about cam button? It is a non roller cam, any help would be appreciated.
thanks

[Guy Hiltz]

You probably dont need any of these items with a hydraulic cam,they dont move like a roller cam will.But Crane and Comp Cams both make high quality double roller timing chain sets that come with a thrust washer that goes between the upper timing gear and the block and this will prevent the timing gear from rubbing on the block.Might give you a little peace of mind!

[jakejake1966]

Originally Posted by Guy Hiltz

You probably dont need any of these items with a hydraulic cam,they dont move like a roller cam will.But Crane and Comp Cams both make high quality double roller timing chain sets that come with a thrust washer that goes between the upper timing gear and the block and this will prevent the timing gear from rubbing on the block.Might give you a little peace of mind!

Thanks for the reply. The timing chain I have didn't come with a thrust washer but I saw in the Summit catalog they have 2 different sizes, would you have any idea which one would be correct for my block?

[Guy Hiltz]

I'm not quite sure what you mean by 2 different sizes,but if you have a 1965-91 Mark IV big block a good choice is Crane's Pro-Series roller timing set part # CRN-13984-1 which comes with the correct size thrust washer.Let me know if this is the info you want.