5.0stang94

Can someone give me some information on an explorer head swap for my 94 gt. What years have the gt 40 and what years have the gt40ps. I know that u need special headers for the gt 40ps but what kind, should i also swap the intake manifold? And what problems might i run into while doing this? And is there anything that i need to know about this.

aode08

Ford Explorer, Mercury Mountaineer, mid 90's

AdderMk2

96-97.5 = GT-40
97.5-2001 = GT-40P


all of this information can be found by searching

red95gtconvert

If you want to use GT40's you might want to have them milled to retain the stock compression ratio. The GT40P's have a smaller combustion chamber that will bring your compression up to 9.5 to 1. The downside is the sparkplugs are in the head at less of an angle than the stock heads and this causes interference between thesparkplugs and the headers. With that beingsaid I still like my GT40P heads, they make pretty decent power.

Stella94GT

red95gtcovert, ur sig says ur running bbk shorties. did you have to do anything special to get them to fit the 40p's?

red95gtconvert

I had to run a 90* plug wire to #7 plug and cut a sparkplug socket in half vertically to tighten the plug with, no real problems to speak of. The others were not a problem at all.

VASSAGO

there is tons of shortys made to fit the gt-p's perfectly i have them and have no problems with wires or replacing plugs, i can get you a link to the headers if you want

Tripwhite

thanks for the help guys. So I take it the swap is worth it. Im going to go ahead and do it. Anything have to be done with the computer or no? link please that would be great on the headers

VASSAGO

http://images.mustang50magazine.com/...ng+headers.jpg