340/422 clearances?

So I've got a 70 340 block that was at .030 and needs to go .060 it was kinda hard finding decent pistons at the 4.1" bore so my machinist and I got to talking and I'm thinking a scat 4" cast stroker kit will do just fine, my rods are good bushed stockers and it should end up with 9.5:1 Diamond forged pistons. IDK anyone personally that's stroked an LA that I can ask so here I am to learn what some of you had to grind away inside to make room for the 4" crank? Thanks much, I'm just shootin for 11's here and maybe a 125hp boost later on 8)

I had a 425W5 motor and I had to grind not much for rod clearance.If you have an old 340 crank and rods so you can mark where the rod bolts on the bottom of the cylinder walls and just grind about .100-.125.

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