need help with ID of 1970 225 six?

[HemiMaster]

Anyone know anything about the optional compression ratio on that year?
N31: Optional Engine Compression Ratio 225
Thanks!

 

[moparleo]

More than you need to know. http://www.allpar.com/mopar/V6/slant-six-specs.html

 

[HemiMaster]

slant six specs

More than you need to know. http://www.allpar.com/mopar/V6/slant-six-specs.html

Thanks for the link. Unfortunately does not answer my question?