Piston to cylinder clearance?

Firstly, um, lose the buddy.
Secondly, proofread/edit your post before you send it.
Thirdly,refer to the manufacturer's recommendations, and treat them as the bible.
Fourthly, pistons and bores need to be measured under strict conditions and with non-"crappy" tools.

Ok having said that, skirt clearances on a 4 inch piston can be from about .0015 to .007 depending on the materials used, and the intended usage.
KB hypers for instance; are .0015 to .0045,between street and supercharged.Forged will have different specs, as will cast pistons.

Merry Christmas back to you, and yours