quick gt40p question, side specific?

[mob]

Hey guys, im trying to line up my headers to make sure they fit my gt40p heads. I was just wondering how do i tell whitch side if the front and whitch is the back? Both sides are exactly the same, but I did realise the spark plugs go out at an angle, so should the spark plugs be facing the front of the car, or pointing to the back? thanks.

 

[NFGTragedy]

I have stock heads on my fox and the spark plugs face back ( towards the firewall ) so i'll assume its the same for the gt40's.

 

[mob]

anyone else?

I found this pic of gt40p heads and they look like their facing the front.

Thanks.

 

[NFGTragedy]

anyone else?

I found this pic of gt40p heads and they look like their facing the front.

Thanks.

I'll be honest that picture looks like its the plugs are facing back... the firewall is to the top left and from that view it appears they are slightly slanted towards to the top left of the picture... but maybe its my mind playing games. I can't believe they would flip the plugs direction between stock e7's and the gt40's. I'm not positive though so don't hold it against me.

 

[mob]

yea i think your right, if they were facing the front Id be able to see the holes. Thanks.

 

[millhouse]

It really doesn't matter. Each head is the same as the other. If the plugs are facing foreword on one side, they'll be facing back on the other. Now, gt40p's have a less aggressive angle than e7's and gt40's. The angle is almost perpendicular to the head.

Does this answer your question…or is there something else your trying to accomplish which is not being understood?

 

[85_SS_302_Coupe]

They're the same castings either side, so if the driver's side faces front then the passenger faces rear, just like E7s.

 

[RYC CUKR]

They aren't side specific. So it doesn't matter which one goes on which side.

 

[VG30DE]

They ARE side specific. Look at the cooling jackets, they are different. The back of the head has an additional port that the front does not have. If you put em on backwards you will have all sorts of cooling issues. Ask me how I know.....

edit... apon re-read I used cobra GT40 heads, not P heads. Maybe it doesnt matter on the P heads but on regular GT40s it DOES matter.

 

[millhouse]

They ARE side specific. Look at the cooling jackets, they are different. The back of the head has an additional port that the front does not have. If you put em on backwards you will have all sorts of cooling issues. Ask me how I know.....

edit... apon re-read I used cobra GT40 heads, not P heads. Maybe it doesnt matter on the P heads but on regular GT40s it DOES matter.

Nope....both heads are identical. They both have cooling ports on both sides. The head gaskets are what blocks the cooling ports off on the front of the engine. They both have accessory holes on both sides as well. Now, P heads do not have the thermactor holes on the backs of the heads while the gt40's and e7's do. The fronts of those have the thermactor holes also….they are just blocked off with a plug. If you get the e7 or gt40's reversed you will have to take the thermactor plugs out of the back of the head and stick em in what now would be the front.

 

[85_SS_302_Coupe]

Guys think about it....they're not going to design and manufacture two different casts for the same head. This saves cost, also if one head gets damaged they won't need a specific side to fix it.

 

[R2D2]

 

[Foxfan88]

Nope....both heads are identical. They both have cooling ports on both sides. The head gaskets are what blocks the cooling ports off on the front of the engine. They both have accessory holes on both sides as well. Now, P heads do not have the thermactor holes on the backs of the heads while the gt40's and e7's do. The fronts of those have the thermactor holes also….they are just blocked off with a plug. If you get the e7 or gt40's reversed you will have to take the thermactor plugs out of the back of the head and stick em in what now would be the front.

you can only put the e7s on one way, the big hole is the back where the thermactor tube goes. the front side has a smaller hole for the stud that holds the PS pump, unless that metal thing is the plug then i duno.

 

[ninety15.0]

you can only put the e7s on one way, the big hole is the back where the thermactor tube goes. the front side has a smaller hole for the stud that holds the PS pump, unless that metal thing is the plug then i duno.

theres the real answer! They ARE side specific. Not sure bout the GT40p's as they probly didnt have an Air Pump tube?

 

[795.0pacecar]

They are not side specific, the big thermactor hole just didn't have the plug in it, the plug that goes in it is threaded on the inside for the accessories.

 

[Coupe5oh]

They are not side specific, the big thermactor hole just didn't have the plug in it, the plug that goes in it is threaded on the inside for the accessories.

Exactly.

I bought some explorer gt-40's (non-P) and thought the same thing, i was convinced i had been ripped off, Then my dad told me i can put them on either side, i just stayed with the factory plug angles.

 

[RYC CUKR]

They are not side specific, the big thermactor hole just didn't have the plug in it, the plug that goes in it is threaded on the inside for the accessories.

ding ding ding

We have a winner.

I believe that the P heads just have a threaded hole for the accessory bolt cause if I remember right I had the bitch of a time getting that threaded adapter off the accessory bolt since I didn't need it with my p heads.

 

[lang williams]

do the alignment dowels allow them to go either way?

 

[bill302]

this is good entertainment...lol,ding ding ding...set the heads down on the ground in front of you with the head on the left exhaust ports facing left and the head on the right facing right thats how they go on....

 

[mob]

thanks guys, I realise now that both heads are the same, and the will be point opposite directions, When I asked the question I was test fitting the headers on the heads with the spark plugs and couldnt figure out whitch header went on the head. The other head was on the floor covered by a towel, so I didnt notice but thanks guys. Maybe when someone dumb as me searches they will find this thread haha.