Engine Question about gt40p’s

[Church401]

Hey guys I’m heading to pick and pulls half off weekend and wanted to grab a set of GT40 or GT40P (modified header setup with p’s)heads. There just bolt and go parts? I’ve read about a million different things, from needing new pedistool rockers to needing new springs. The car in question is a 1992 notch 5.0.

 

[sams93gt]

Are the heads complete or just heads that need to be put together? If they are complete I think you will need the supporting mods for heads like, maf,tb,injectors, tune and if I'm not mistaken some stock and/or aftermarket headers dont fit right on gt40p heads? Just my 2cents hopefully someone more knowledgeable will check in, good luck with the parts man

 

[Church401]

Hey thanks for posting I know with the gt 40- s, the stock fuel system can and will support the increased flow. The heads will be complete. Cause I will be pulling them from the boneyard . My question a more for the roller rockers and valve springs with the stock cam. I understand the p heads need modified headers.

 

[Church401]

need new
head bolts
head gaskets
intake gaskets
thermostat gasket
valve springs
valve seals
valve cover gaskets
exhaust manifold gaskets
spark plugs
tube of RTV

Found some info seems like a straight forward swap. I just didn’t want to get caught with my pants down. You know you start the swap and next thing you know , you need a $200 set a rockers.

 

[Mustang5L5]

Target gt40 heads over the gt40ps. No special headers required

 

[88LXSleeper]

The P's use different spark plugs than stock. Headers will clear with 90 degree boot on #6 or 7 plug, pain to get plug out though.

 

[Church401]

The P's use different spark plugs than stock. Headers will clear with 90 degree boot on #6 or 7 plug, pain to get plug out though.

So your saying with a set of normal headers will clear with 90degree plug boots? Because my car already has 90 degree plug wires and tubular pacesetter shortys. Plus a little torch and hammer action could help haha.

 

[88LXSleeper]

So your saying with a set of normal headers will clear with 90degree plug boots? Because my car already has 90 degree plug wires and tubular pacesetter shortys. Plus a little torch and hammer action could help haha.

I have BBK headers on mine and it barely clears. Have to pull header to get plug out