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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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| | | | Joined: Jan 2013 Posts: 1,518 'Bolter | | 'Bolter Joined: Jan 2013 Posts: 1,518 | Considering it is a stock cam with stock spring pressures and you primed it and hopefully ran an oil with zinc or a zinc additive you will be just fine. I am the same way, would rather time the engine and adjust the carb in lieu of a poor running engine at 2000rpm for cam break-in. Your cousin is on the mark IMHO. BTW, there is nothing in the repair manual about cam break in and you can bet they didnt do it at the factory either.
Steve
Last edited by sstock; 07/31/2018 6:34 PM.
1953 Chevrolet 3100261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done In the DITY GalleryVideo of the 261 running1964 GMC 1000305 Big Block V6, sm420, the next cab off restoration
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