CMB HYDRO RACING 67 OR 80 ?

[jmkarem]

Hi, how can I tell if a CMB green head Hydro Racing engine is a 67 or an 80 I can't see any numbers anywhere?

 

[Ray Sametz]

80 sleeve should be approx .966 dia. or 15/16 Ray B)

 

[mark voorhies]

80 sleeve should be approx .966 dia. or 15/16 Ray B)

1.062 bore