Just how big can you go and maintain longevity..... .070 .080 ?
Late '73 and later cylinders can go to +.070" safely. '72-E73 cylinders, +.020". JK
If more power is what your shooting for, you can install an S&S 4 5/8" stroker flywheel/piston assembly. 74 CI.
Set up correctly, you can show a lot of folks your tailight.
many years ago i did the 77 inch storke. (1974 cylinders) then went 60 over cause of the welding up oil return holes and wear... its been that way many years and miles...
granted, i dont run it as hard as in old days. still reliable as can be...
fun ride. i take it out a couple times a month. old broken leg dosent like to kick start it..
good power to say the least...