slowlx

hey, i am new to the mustang
but i bought a 88 lx that has a set of the gt40-p heads, what i need to know is i got a set of flow tech long tube headers for it
and the spark plugs will not go in for the header
is there a set of long tubes that will work and how much modifaction does it take to make them work if there is some.
i am sorry if i posted this in the wrong section but any help will be great thanks.

ckyguy68

You have to get special headers made for the GT40Ps because of the different plug location.

Ninety5five0

Dont think there are long tubes that will work without modification. There are a specific gt40P header made for those heads. The closest fitting longetube, i think, is the bbk LT's, but i think they still need to be modified a bit. Good luck, but id stick with shorites unless your over 500 HP, and theres prolly no way with P heads, unless your blown a huge amount.

BlackLX

Shorty's
http://www.latemodelrestoration.com/...0%201&comp=LRS

Couldn't find any long tubes

Ninety5five0

I got mine on ebay, MAC jethot coated for 180 shipped, brandnew.

Mowin8603

not bad! i think ill be using ebay as much as possible for mods, but its still a little nerve racking buying from ebay to me..

EDIT: just found these on ebay
http://cgi.ebay.com/ebaymotors/FORD-...QQcmdZViewItem

slowlx

thanks for the help,is there a deferints in between the gt40 heads and the gt40p heads,
becouse i found a set of hooker long tubes for the gt40 heads.
or what kinda of mods i need to do to fit the bbks
thanks again for the help

Ninety5five0

The P and the 40s are different. The P's have a different plug angle, its almos strait out, instead of in at an angle. They also make different compression, and overall the P's outflow the 40's.

http://www.stangpro.com/html/article...les/gt40p1.htm

slowlx

thanks,mine are just about strait out, i bought this car with the stuff already on its got a pretty good size cam just not for sure what kind.
when i had the heads off the pistons looked real good had hardly any carbon on them, they where 4 valve relife i dont really know what came stock in it.
what kind of injecters can i put in it, i belive one is stickin it has a 70 or 75 mass air but i have heard people sy that the mass air has to be tuned for the injectors
thanks

Ninety5five0

What color injectors are in it ? 24#ers wouldnt hurt, but might not be necessary. Those are prolly stock pistons, i believe the stock pistons have 4 notches in them, not positive tho....
And yes, you have to get a different MAF to match the injectors. Stock is 19#ers, so if you want to upgrade to 24#ers you'd need a different maf calibrated for 24#ers.