Only at one spot on cyl. No.6 at the top is it 3.9096. Then its 3.8088 And other cyl's are average 3.9088 at the top of cyl.
If I measure 2" down from the top Max cyl. Bore is 3.8948 only on one of the cyl's And YES cyl bore tapers down to 3.8750 to 3.8760.
This engine had Standard pistons in it.
The crank Mic out at 2.2985 No taper & No out of round. Just 2.2985 no mater where you mic on the Main journal. Same go's for the Rod journal 1.9994. Ok I check it again and only one location on the main journal was at 2.2987.
And YES cyl Bore has alot of Taper. But not much out of round.