Thread: spark plug ?
View Single Post
Old 11-30-2011, 08:37 PM   #8
Dyno
Senior Member
 
Dyno's Avatar
 
Join Date: Dec 2002
Posts: 918
Likes: 1,140
Liked 691 Times in 205 Posts
Default Re: spark plug ?
I saw a S/S hemi pick up 50 horsepower on the dyno last summer with a set of fresh NGK plugs. Not mine. Dyno
Dyno is offline   Reply With Quote