Changing spark plugs in a small block 360 Any recommendations on which brands are the best to use?

by chance did you mean "AG22's" ? I'm trying to cross reference this to Champion and see the heat range. Thanks


Hold on bad info. I shouldn’t post while eating AR3912 now. And it’s been a long time but I think AR3922 on pump gas. I’ll have to see if I have one laying around to double check the pump gas number

Autolite AR3912 Racing Plug