Posted by Vaughn [172.69.22.197] on Saturday, February 09, 2019 at 09:59:22 :
In Reply to: Auto lite 303 /306 spark plugs posted by David Thorn [108.162.219.187] on Saturday, February 09, 2019 at 09:29:10 :
Heat range mainly. The 295/45's run hotter to prevent fowling, but the 303/306 can be used. Here is a link