bore????????????

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
i am looking at a coasthigh 306 C.I.D kit (forged enerything) and is says that it is for a 4.000 to 4.060 bore what does this mean? i thought a 306 would be .30 over? i am confused??? can some one clear this up for me

THanks!!