whats the difference in the lightning heads and the heads on a stock 5.4 97-03 model?

 

HI!... The LIGHTNING heads are "P.I' (Power Improved). Just like all the heads on the 5.4 from 1999 to 03 and some limited edition 04's. 97 -98 are non P.I. Basically the LIGHTNING 5.4 and the regular N/A 5.4 long blocks are identical ecept for the pistons. N/A 5.4 has 9.0:1 hypereutectic pistons and the "L" has 8.4:1 forged pistons.

NON "P.I' on the left/"P.I on the right :

 

same head.

 

only difference is the lightning has more force behind it when it rockets the plugs out of the cylnder heads :-p

 

never thought of that lol

 

ive seen lightnings shoot the plugs and get em stuck in the hood.

 

http://www.mustang50magazine.com/tec...ugs/index.html

interesting read them plugs seem to really help lol 5hp out of a spark plug change!

 

Pics please.

 

yeah lol i definitely want to see pics of that

just making sure they were the same. just saw a set on ebay for about$100 delivered

 

lemme see if i can find it.. being this was 4 years ago.. its unlikely its out there still with someone hosting it.