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Click on image for the lowdown. 
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| | | Forums66 Topics128,024 Posts1,055,395 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2007 Posts: 2,644 Shop Shark | | Shop Shark Joined: Sep 2007 Posts: 2,644 | Having to add Zinc to motor oil for flat lifter cams is a myth. This subject has been beat to death repeatedly yet it still surfaces.
It might be a good idea to throw some in during break in but all major motor oil manufacturers have reassured people that modern oils are perfectly capable of handling non-roller lifters.
Lifter/cam failures are almost always the result of cheap parts made from inferior materials. | | |
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