I need to know if I have the newer heads in my 2002 5.4 sc. The head casting number is rf-2L1 and the heads that are having the spark plug blowout problem is rf75e rfxL rfL1.

If anyone can help please respond.

Thanks
72 mustang

 

newer than what? all the heads have had this problem, just hit and miss

 

wonder if hes referring to wanting to know if he has PI heads and concerned with the plug blowout issue as well with his heads?

 

i thought this problem was fixed in late 2003 with different heads with more threads holding the spark plugs in

 

i think the new 3v heads was the revision? not sure, but i think thats it BUT they have the opposite problem?

 

yeah the plugs dont want to come out of those...

 

HI!... In mid 2003 FORD revised the 2-valve P.I heads. They added for threads to the sparkplug holes. 8 threads vs. the old 4 threads. Your 2002 5.4 will still have the 4 thread spark plug holes.

 

thanks Neal i thought i read something about it for the 2003 hows the truck coming

 

HI!... It's not..........

 

Yep, what Neal said.

If i had the heads off i would install 8 inserts in the plug holes.

 

yea i going to supercharge my truck in a year and since i have heard about the problem i have been trying to keep on top of it i change my plugs about 6 months a go and about 3 weeks after that i heard a tapping noise and felt the top of my coil pack and felt it coming out sure enough 2 plugs were backing out