GT40P questions

95BlackStang · February 6th, 2009, 04:14 PM

next weeks im gettin me some gt40p heads for 200, i wanted to know what else i have to do to make the swap?

it has new valves and better springs on the heads as well as some mild porting.

95BlackStang · February 6th, 2009, 09:08 PM

bump

WildWill · February 6th, 2009, 09:52 PM

that's a really good price for some ported 40p's! they are a direct swap from the stockers. you need to get all new gaskets (head, lower intake, upper intake, valve covers). i would suggest picking up some 1.7 roller rockers to put on there while you've got it apart. if you've already got a valve job and they are all cleaned up, then just throw them on there! If you've never done this kinda work before, give yourself lotsa time! My two night project turned into a 5 night project cuz I had no idea what I was doing! lol. it was really fun tho and the next time it's be a breeze!

95BlackStang · February 6th, 2009, 11:01 PM

Originally Posted by WildWill

that's a really good price for some ported 40p's! they are a direct swap from the stockers. you need to get all new gaskets (head, lower intake, upper intake, valve covers). i would suggest picking up some 1.7 roller rockers to put on there while you've got it apart. if you've already got a valve job and they are all cleaned up, then just throw them on there! If you've never done this kinda work before, give yourself lotsa time! My two night project turned into a 5 night project cuz I had no idea what I was doing! lol. it was really fun tho and the next time it's be a breeze!

yeah i have some experience,i took apart a engine in high school. will my stock headers fit, or should i wait and save up for some long tubes. and will i need a tune after?

BTW nice paint job man!

TKOTLARZ · February 6th, 2009, 11:19 PM

i dont think ur headers r goin to fit..im pretty sure u need to get explorer headers..im sure somone will correct me if im wrong..but if so, i would jus save up and get the headers, then put on the heads at that time..and no u wont need a tune

95BlackStang · February 6th, 2009, 11:22 PM

Originally Posted by TKOTLARZ

i dont think ur headers r goin to fit..im pretty sure u need to get explorer headers..im sure somone will correct me if im wrong..but if so, i would jus save up and get the headers, then put on the heads at that time..and no u wont need a tune

i guess i better pull the piggy bank out lol.

any one know a guesstimate of around what numbers i will see

95BlackStang · February 7th, 2009, 12:19 AM

what long tubes would be best for these heads?

WildWill · February 7th, 2009, 10:14 AM

Shit I totally forgot to mention that! Sorry! NO your stock headers will not fit. You need "p" specific headers or long tubes. I know both bbk and mac lt's work. I got mac 1 3/4's but I would recommend the 1 5/8 cuz a few of my bolts were a pita to get to. They are great headers tho

95BlackStang · February 7th, 2009, 10:17 AM

Originally Posted by WildWill

Shit I totally forgot to mention that! Sorry! NO your stock headers will not fit. You need "p" specific headers or long tubes. I know both bbk and mac lt's work. I got mac 1 3/4's but I would recommend the 1 5/8 cuz a few of my bolts were a pita to get to. They are great headers tho

were can i find "p" specific header?, yeah i was lookngi at mac but couldn't find a matching o/r h-pipe.

95BlackStang · February 7th, 2009, 02:24 PM

bump

WildWill · February 7th, 2009, 03:26 PM

Go to mac's website and select long tube headers. Go thru the sub menus to get to the parts for your year of car then select the lt's then go pack and select the h-pipe - you need a "shorty" pipe for lt's. Should run you about $450 if I recall...

95BlackStang · February 7th, 2009, 10:21 PM

Originally Posted by WildWill

Go to mac's website and select long tube headers. Go thru the sub menus to get to the parts for your year of car then select the lt's then go pack and select the h-pipe - you need a "shorty" pipe for lt's. Should run you about $450 if I recall...

dam ima have to save a pretty penny for those

February 6th, 2009, 09:52 PM	#3
WildWill Hardcore Enthusiast 1995 Mustang GT Join Date: Oct 2007 Location: Solomons, MD Posts: 1,112 iTrader: 0 reviews	that's a really good price for some ported 40p's! they are a direct swap from the stockers. you need to get all new gaskets (head, lower intake, upper intake, valve covers). i would suggest picking up some 1.7 roller rockers to put on there while you've got it apart. if you've already got a valve job and they are all cleaned up, then just throw them on there! If you've never done this kinda work before, give yourself lotsa time! My two night project turned into a 5 night project cuz I had no idea what I was doing! lol. it was really fun tho and the next time it's be a breeze! __________________ GT40p heads, 1.7 crane RR's, GT40 u/l, MAC LTs, MAC o/r h-pipe, Flowmaster 40s, 65mm t/b, '03 Cobra Bilstein Struts, Tokico Bullitt Shocks, MM c/c plates, Eibach Sportlines, B&M shifter, 255lph f/p, RAM p/g clutch, Fidanza alum fly, rebuilt t-5

February 6th, 2009, 11:19 PM	#5
TKOTLARZ Hardcore Enthusiast 1994 GT Join Date: Nov 2007 Location: lake worth, Florida Posts: 1,002 iTrader: 0 reviews	i dont think ur headers r goin to fit..im pretty sure u need to get explorer headers..im sure somone will correct me if im wrong..but if so, i would jus save up and get the headers, then put on the heads at that time..and no u wont need a tune __________________ Cohagan Engineering, Inc.

February 7th, 2009, 10:14 AM	#8
WildWill Hardcore Enthusiast 1995 Mustang GT Join Date: Oct 2007 Location: Solomons, MD Posts: 1,112 iTrader: 0 reviews	Shit I totally forgot to mention that! Sorry! NO your stock headers will not fit. You need "p" specific headers or long tubes. I know both bbk and mac lt's work. I got mac 1 3/4's but I would recommend the 1 5/8 cuz a few of my bolts were a pita to get to. They are great headers tho __________________ GT40p heads, 1.7 crane RR's, GT40 u/l, MAC LTs, MAC o/r h-pipe, Flowmaster 40s, 65mm t/b, '03 Cobra Bilstein Struts, Tokico Bullitt Shocks, MM c/c plates, Eibach Sportlines, B&M shifter, 255lph f/p, RAM p/g clutch, Fidanza alum fly, rebuilt t-5

February 7th, 2009, 03:26 PM	#11
WildWill Hardcore Enthusiast 1995 Mustang GT Join Date: Oct 2007 Location: Solomons, MD Posts: 1,112 iTrader: 0 reviews	Go to mac's website and select long tube headers. Go thru the sub menus to get to the parts for your year of car then select the lt's then go pack and select the h-pipe - you need a "shorty" pipe for lt's. Should run you about $450 if I recall... __________________ GT40p heads, 1.7 crane RR's, GT40 u/l, MAC LTs, MAC o/r h-pipe, Flowmaster 40s, 65mm t/b, '03 Cobra Bilstein Struts, Tokico Bullitt Shocks, MM c/c plates, Eibach Sportlines, B&M shifter, 255lph f/p, RAM p/g clutch, Fidanza alum fly, rebuilt t-5

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