60 over

[427' Cobra]

well i was taking my motor apart this weekend (86 mustang goin to carb) and on top of the pistons it say 060 does this mean that's it's bored 60 over or does anyone know what this means

 

[427' Cobra]

nevermind since nobody could answer i found out that it was bored 60 over

 

[Burnt Rice]

Thats a pretty big bore!