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Old 02-16-2018, 11:17 PM   #11
Dwight Southerland
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Default Re: Groove In BBC Lifter Bore

Carl, you have to allow for the fact that the angle of the lifter bore is also off in the old blocks. That does effect the valve event timing regardless of the lifter type.
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Old 02-17-2018, 07:36 AM   #12
carl hinkson
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Default Re: Groove In BBC Lifter Bore

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Originally Posted by Dwight Southerland View Post
Carl, you have to allow for the fact that the angle of the lifter bore is also off in the old blocks. That does effect the valve event timing regardless of the lifter type.
It would have to be off 5 degrees to have any effect and I have not seen any that far off.

Do machine lifter bores ???
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Old 02-18-2018, 06:54 PM   #13
Alan Roehrich
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Default Re: Groove In BBC Lifter Bore

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Originally Posted by brian schuetta View Post
What are your thoughts on cutting a vertical groove in a BBC lifter bore for flat tappet cam lifters?
I never do it. I consider it a crutch, at best, which does not actuallysolve any problem, at best it might mask a symptom.
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