The Correct spark plugs for this set-up

blkstangcon1985 · 11-04-2006

I have a 302 block E5AE-C3B 1985 HO CFI but it has E6SE Heads from '86 and '87. Autolite 2545 plugs are for the '86 302 stang which has the E6SE heads.
Are these the right plugs or is their a difference having the earlier block...just don't want to crash my plugs...

The one's I took out were Bosch plats 4211 which were nearly a 1/4 " shorter..I'm surprised this car ran with these short plugs but several show signs of high carbon buildup...maybe 3 cylinders were out...

thanks

FoxChassis · 11-04-2006

Autolite 2545 is the correct spark plug for the E6SE head. That plug has a longer "reach" than the plugs for pre- or post-'86 heads (Autolite 25).