Dan89lx

Im thinking seriously about adding some gt40p heads to my car. Do you really have to have different headers. I have longtubes now and I really like my exhaust system. The headers dont have a name on them anywhere. They do not have a plate that runs across them. The tubes look like they have a decent amount of room inbetween them. I have heard that it really doesnt matter what kind of headers you use when using long tubes. What do you guys think? Thanks

Obsol3te

From what I heard.
The GT40P heads required a different header because of where the spark plugs are located.
And it doesn't clear or something like that.

Moosetang

Mac Longtubes, Flowpath longtubes

Stinger

Go here and click on Articles.. This guy has the best GT40P site there is. http://www.stangpro.com/ I have Gt40P heads and yes you will need differnt headers. If you need some let me know i have some shortys ill sale you from MAC. My full legth headers worked on mine and im not sure who makes them. I got lucky. It is from the spark plug position GT40P has a better burn . I love GT40P heads just didnt care for worring about different Headers. If you have any ?? just IM me and ill try and help.

87mustang347

what kind of headers work for it cause im thinkin about gettin a pair too

90lxtyson

I have the gt40p's on my car. I have the ford p50 ss headers. Mac also makes a set that works. They gave me a good increase in power but not as much as what I expected. I have 10:1 with a Comp cam .512 270/276 duration. Spend the extra money on a good set of afr 165's.

Obsol3te

But that's the point of gettin GT40p's
so you DONT spend that assload of money on something as expensive as the AFR heads

Gonna go junkyard hoppin tomorrow see if I can find me a junked 96+ Explorer

Dan89lx

thanks guys, I appretiate all of your help. I have to get my clutch situation fixed first, then Im probably going to get the P heads. My buddy is going to sell me some that have benn shaved .020 with trick flow springs for $300 bucks.

Stinger

Thats a good price.