'03 Redfire Coupe 6 spd 10.54@133.5
Whipple tuned by HBH, BilletFlow stuff (and Doug didn't even ask me to post that), Raptor Shift Light, Solid Axle w/3.73, etc, etc, etc...
Well I came up with the The number of turns head thread Test.
Dan tested out the theory for me.
Dan also adamantly stated the 04's have 9 threads and he was always right.
Basically there is a seat in the head for the wider portion of the plugs just above the threads to stop on. This seat, notch, ledge, whatever you want to call it is in the same location in the 03/04 heads. What is different is the 03 head threads start at the bottom of the head and go up 4 threads then there is space between there and the seat.
The 04 heads threads start at the same spot, but go up 9 threads much closer to the seat.
So when you screw a plug in your are using the bottom 4 threads of the plug on an 03 head and the bottom 9 plug threads on an 04.
Most plugs have 10-11 threads.
So this is how to find out how many threads your head has.
Make full 360 degree turns on the plug
4-4.5 turns to remove or seat the plug on a 4 thread head
8-8.5 turns to remove or seat the plug on a 9 thread head
Attachment 1725
Last edited by BurnTire; 12-20-06 at 11:31 PM.
Sold
2004 Cobra, Whipple ,TH-400
Burning Corn
9.97 - 135.5
I’m not asking you to apologize to me what so ever I want a formal apology to INDY. You are the one whom started on him so I jumped to set the record strait on the 9 thread stuff and what happened between you and I was uncalled for between the two of us and we both threw shit at each other however Indy was only trying to answer the question at hand and you flug shit at him. He didn’t need that,
He apologized on the first page
http://www.highperformancestangs.com...6&postcount=13
I think we can just end this thread the way it is.
We have totally verified the issue for the cobra world to see and came up with an easy way to check the status of a set of heads.
Sold
2004 Cobra, Whipple ,TH-400
Burning Corn
9.97 - 135.5