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Tim Ayers · 12-12-2023, 10:49 AM

Depending on the type of cam you are using, I may suggest scalloping the top portion that faces in towards the valley. With a high lift reground cam, the adjusting screw on an adjustable lifter can sometimes sit below the top of the lifter boss which makes it hard to turn the adjusting screw.

12-12-2023, 10:49 AM	#5
Tim Ayers Senior Member Join Date: May 2010 Location: NJ Posts: 7,233	Re: lifter bore adj hole Depending on the type of cam you are using, I may suggest scalloping the top portion that faces in towards the valley. With a high lift reground cam, the adjusting screw on an adjustable lifter can sometimes sit below the top of the lifter boss which makes it hard to turn the adjusting screw. Last edited by Tim Ayers; 12-12-2023 at 11:17 AM.