Originally Posted by rajeev2liz
i would go with the pul/star spark plug thats what i use its a bit prices at any where between 13-14 dollars but well worth it another good one is Bosch
Bosch are the worst plugs made even for my BMW. I use NGK TR6 in a high boost application.
If your car is bolt on modded stick with the OEM motorcraft plugs.
---------- Post added at 11:26 AM ---------- Previous post was at 11:24 AM ----------
Originally Posted by Allans03ragtop
Thanks guys. Has anyone had a problem with them blowing out if the block? I read that that is common with the 4.6. Do you have to remove the fuel rail to change them?
Your car has the 7/8 thread Romeo heads and you will not have any issue. The early Windsor heads had on 4/5 threads and were more prone to blow out. Also make sure the use some anti seize on the plugs treads and you will be good.