1973 165HP Delco Plugs

[1stgenbird]

What # AC Delco spark plugs should I be using? As this is a GM 250 cid engine, I am not interested in using any other brand than AC Delco but I don't know what the application is.

 

[Don S]

Re: 1973 165HP Delco Plugs

Manual calls for the CR-44N

 

[1stgenbird]

Re: 1973 165HP Delco Plugs

Thanks