bore gauge ??

[Highbanked Hauler]

 What kind of gauge do you need to check bore size and  how do you find out the original bore size ??   Thanks

[69rtse4spd]

Dial bore gauge or telescoping gauge & micromater. You can check at the bottom of the bores where the cylinders do not get any wear from the rings. Then check near the top of the bores, this will tell how much wear they have, as compared to the factory specs.