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Author Topic: GT-40 "P" Header Question 89_Fakesnake ¯ Member # 1253 posted                                 Is it possible to fit a set of shorty headers from regular GT-40 cylinder head or any other head for that matter? I know the spark plug design angle is different but from what I could see this wouldn't prevent using a diff header. Am I wrong? Has anyone tried using something different? My main reason for asking is that I need to get smog done soon and the only thing I ever get crap for are my headers...thanks in advance for any help. -------------------- 1988 Thunderbird Turbo Coupe (for sale) 1972 F100 2007 GSXR 1000 Posts: 480 | From: Sacramento, CA | Registered: May 2002  |  : JohnB Tech Moderator Member # 969 posted                              It depends on the type of header used. Most will not work. *Some* early Mac's will work. The only set that's a sure winner are the Ford Motorsports. Need some? -------------------- 1965 Shelby Cobra 1993 Cobra 2012 F150 Raptor 2020 GT500 Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002  |  : 89_Fakesnake ¯ Member # 1253 posted                                 oops... [ April 18, 2005, 11:17 AM: Message edited by: 89_Fakesnake ] -------------------- 1988 Thunderbird Turbo Coupe (for sale) 1972 F100 2007 GSXR 1000 Posts: 480 | From: Sacramento, CA | Registered: May 2002  |  : 89_Fakesnake ¯ Member # 1253 posted                                 I'll talk to you about the headers. Also, I want to get the car out to you before smog. I've got a check engine light and a pretty bad loss of low end power....I checked all vacuum lines and everything looks fine. I need your eyes and ears man!!! -------------------- 1988 Thunderbird Turbo Coupe (for sale) 1972 F100 2007 GSXR 1000 Posts: 480 | From: Sacramento, CA | Registered: May 2002  |  : 19gt93 ¯ Member # 5072 posted                              i got some gt 40 p and i used some bbk shorties -------------------- 2 hemi's and a 5.0 Posts: 242 | From: BAYAREA | Registered: Nov 2004  |  : JohnB Tech Moderator Member # 969 posted                              Care to take a pic and post it up? (#7-#8 plug area) How close are the boots and plugs to the headers? I just pulled apart a GT-40P longblock with BBK's, it wasn't pretty. An equal-length on one side, a shorty on the other just to make it work. -------------------- 1965 Shelby Cobra 1993 Cobra 2012 F150 Raptor 2020 GT500 Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002  |  : heffe190 New Member Member # 5138 posted                              i am running gt40p heads and bbk shorty headers. i had a problem at first with burning up plug boots on the headers but i fixed this by running 90 degree boots in place of the usual 45 degre boots. my wires are for a 79 chevy pickup with a 350 but the length and boot angle work great on my 91 GT. Posts: 3 | From: Concord, Ca | Registered: Dec 2004  |  :

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