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Discussion Starter #1
Ok, I am ready to machine my AS-21 case.

I want to have "the works" done to it.
Punched out for 94mm P&Cs
Clearanced for 86mm crank
Full flowed
10mm case studs

Do I need to weld behind #3?

what else should I have done to it?
 

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You "may" have to cut down the lifter bores. If its a big cam and you have a lot of head/spring psi it may be wise to bush em as well. I like the drill/tap for oil galley plugs option too.
 
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