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Old 03-16-2026, 10:17 PM   #9
GB SISSON
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Join Date: Jan 2014
Location: Orcas Island Washington
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Default Re: Ford flathead adjustable mushroom lifters mystery.

Quote:
Originally Posted by Bored&Stroked View Post
The wider face allows a more aggressive opening ramp that uses the additional width to open the valve faster/sooner.
Thanks Dale, I get how that would happen. Would these lifters be used in conjunction with a performance/high lift cam, or are they a less expensive alternative to an aftermarket cam? I hope I'm not asking dumb questions, it's just that the workings of valve trains is a really interesting subject to me.
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