spark plugs

[jcelk]

i have a 350 gm engine made in mexico with 882 heads have autolite 26 in there now they look good i was wondering if the reach was right and what plug is the best thanks

 

[Sweet_Johnny]

The 882 heads were available in two different chamber sizes which will affect plug choice, as will the engine specs. If the Autolites appear to burn correctly then a spark plug cross reference will tell you what interchanges. https://www.sparkplug-crossreference.com/convert/AUTOLITE/26

Some swear by Champion, others NGK, and still others claim good old Autolites are perfect in a mild SBC. I'll be trying some Champion Platinums soon but have typically ran Accel or Bosch.

 

[jcelk]

thanks johnny i didn;t know they had 2 chamber sizes thought they were all 76 cc is there a way to tell the difference ? without a year make and model for this engine maybe i should get plugs for a 1977 350 impala