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Old 09-03-2008, 07:43 PM
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Break in oil for rebuilt 350 w/ flat lifters

I have been reading recently that if I break in my rebuilt 350 w/ flat lifters using today's oil, I'll waste the cam in 10 minutes. Something to do with the lack of zinc in the oil. What's the skinny? Is there fact to back up this claim?

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Old 09-03-2008, 07:55 PM
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There should be some break in instuctions covering all that with your new cam and lifter set. If not , then I would contact the cam manufacturer and ask their reccomendations etc. Also...using the search function on this site and typing in flat tappet lifter break in....I got 3 pages of threads discussing this subject.....click on the link and start reading. http://www.hotrodders.com/forum/sear...7&pp=25&page=1
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Old 09-03-2008, 10:45 PM
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The number one problem in my opinion is using too much spring pressure. Assemble the motor with a set of old worn out stock springs to break-in the cam, then change the springs to your hot rod items after break-in.

Order a quart of this and add 10 ounces to the oil you use to break-in the cam. Then use 1 ounce per quart on subsequent oil changes....
http://www.sfrcorp.com/product/9
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