June 15th, 2023, 11:01 PM
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-= Extreme Supporter =-
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Join Date: Jun 2013
Location: Greer, SC
Truck: 1964 GMC 1500 2wd
Age: 69
Posts: 432
Rep Power: 200
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Re: '65 GMC 1500 project. From the Netherlands
Quote:
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Yes, the camshaft lobes are ground on a slight taper, but the lifters should have a crown. Should they be flat, that would result in a line contact, which would wear rapidly. The crown helps break in and mating to the cam lobe. It does reduce spinning to an extent but helps distribute the load better due to increased surface area.
Take a look, this article explains it very well:
To view some links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Maybe you should introduce yourself with a new topic?
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Thanks. That was a good read. I always though the lifter was flat on the bottom. Having the slight crown explains a few things.
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