Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks



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Joined: Jan 2002
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Ross, Thanks for letting us know.

If you have not already done so I would suggest adding a bottle of General Motors Engine Oil Supplement for the breaking in of the new cam.(or something else used for that purpose)

Note second post-are all valves moving up and down. This sounded like a clasic case of worn cam lobes from the beginning.


Gene Schneider
Filling Station - Chevrolet & GMC Reproduction Parts


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Hello Gene I thought I had the proper valve action but was mistaken, live and learn. I used to work in a Chevy dealership in the 60's and use EOS then and put a bottle in now for good measure plus I used GM cam lube when we installed cam. I let it run for about a 1/2 hour at 2000 RPM to break in cam. Thanks again Ross


ROSS
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Originally Posted by Mike McCagh
"pour some marvel mystery oil on both valves and while your buddy is turning the engine over slowly, take a brass headed hammer and tap the valve stems/rockers. repeat this for 10 or 15 minutes and the valve(s), if stuck, may free up . good luck, mike

What is the mystery oil named, and where to get it, please? idea



Solan G, # 32797

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It is called "Marvel Mystery Oil" and we can get it at just about any auto parts store here in the USA.

wink :) :grin:


The Mangy Old Mutt

"If It's Not Junk.....It's Not Treasure!"
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