Mopar 400 block 8 sleeves

yellow rose said

IDK, unless this is going to be over 650 HP or blown or something I'd use a 3/32 wall sleeve and run it.

The thin areas are mostly on the non thrust sides by your diagram.

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I was 640 before tear down, now it should be 700+ easy.
Thin areas are also on the very bottom where half fill will help so I am going for it if bores clean. We will see how it turns out. It will be .108-.110 wall if it cleans.
Will know very soon and report whats next.

Also talked to ICON about their piston to wall cearance.
Piston advertised for 4.382" hole is really 4.3775" size. They recommend piston to wall clearance between 0.0045" and 0.0065". Maximum hole size is 4.384".