What's my cubic inch?

[jrvariel48]

Originally Posted by Ol' Ron

3.328?????? 3.312= 3 5/16. 3.328 = 3 5/16 +.016. Strange bore?
Gramps

Ron, Unfortunately, Gary (GOSFAST) is no longer with us for me to ask him.
I do remember him telling me he wanted to keep the bore as tight as possible and not remove to much material because it's a blower motor.
There's a note on my paperwork that says "8BA-Std Bore-Needs O/B (.040")
I hope this makes sense. Thanks Joe