85GTsleeper

hey guys i was thinking about picking up some gt-40 heads for my 85, and i was wondering if they would just bolt on or would i have to do any modifications. One more thing, whats the difference between gt-40 and gt-40p is it the spark plug angle or what. sorry to ask a dumb question lol

85GTsleeper

Forgot to say i was thinking about picking up gt-40's from the junk yard from a explorer

89 fox

direct bolt in....the p's have different plug angles and require special headers

85GTsleeper

oh ok thank you very much

samseed101

Asked and answered That's really all there is to it. Just remember that if you want GT40 and not the P-series.. the Explorer has to be from before 1997 1/2

89 fox

no prob man

nit4gudtime

the exhaust valves are a little smaller. not exactly positive how much but they are a little smaller.

LTnone

Not jumping on you, the question isn't a problem at all, but... Anyone else notice how ungodly many GT40 threads we've gotten in the past while? I'd say it's sticky time, but it's not like anyone reads those anyway

capri debris

The following site should be a sticky... it has really good information about GT40-P heads. http://www.stangpro.com/html/article...les/gt40p1.htm

AdderMk2

the P heads have smaller valves, not the regular GT-40's

40's have 1.85/1.54 valves and the P's have 1.85/1.46 valves