quick GT40P question
- Thread starter 90LX5spd
- Start date
No. The plugs, reguardless of size are going to hit the primaries. The problem is that the plugs are in a different angle than typical Ford heads, and come almost straight out of the side of the head, and straight into the header pipes. The "P" headers come straighter/further off the heads to clear the plugs. MAC shorties will not clear, but MAC full lengths will because they come out far enough to clear them.
Anyone saying they're using short plugs or certain headers, are either extremely lucky or are running regular GT40s, and not the P's.
Anyone saying they're using short plugs or certain headers, are either extremely lucky or are running regular GT40s, and not the P's.
See if MAC will sell you the P specific headers or Central Coast Mustang.
I bought two pallets of GT40P heads and I had some brand new MAC short headers. I bolted the headers to the heads and I did have regular length spark plugs installed. The rear-most plug did make a tad bit of contact with the header, or there was so slight clearance I knew the wire would never go on - don't recall exactly. Either way, I then installed a short plug back there and had room for the plug wire.
If you don't want to take a chance, get the P headers but if you know someone that has some standard MAC shorts lying around, try them and see.
I bought two pallets of GT40P heads and I had some brand new MAC short headers. I bolted the headers to the heads and I did have regular length spark plugs installed. The rear-most plug did make a tad bit of contact with the header, or there was so slight clearance I knew the wire would never go on - don't recall exactly. Either way, I then installed a short plug back there and had room for the plug wire.
If you don't want to take a chance, get the P headers but if you know someone that has some standard MAC shorts lying around, try them and see.
jaymac
New Member
I have BBK shorty headers and and regular plugs for the explorers.
You can search for my thread titled "pics of gt40P shorties and BBK headers" or something like that. To change plugs, I had to remove the drivers side header, (PITA), and a motorcraft plug wire turned backwards (you'll see it in the pics), but they work!
You can search for my thread titled "pics of gt40P shorties and BBK headers" or something like that. To change plugs, I had to remove the drivers side header, (PITA), and a motorcraft plug wire turned backwards (you'll see it in the pics), but they work!
jaymac
New Member
darthcual
Member
Daniel50
New Member
i got the p ford racing headers and they will fit perfect for about 230 shipped to you from summit
