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12-02-04, 06:18 PM
|  | Founding Member | | Join Date: December 2000 Location: So. Cal.
Posts: 567
| |  97 GT PI HEAD SWAP DYNO SHEET INSIDE
Hopefully someone will find this usefull. The car originally dyno'd ~186 HP bone stock and rated at 215 Crank HP.
Before the head swap (everything else already on the car) it dyno'd
213.4 RWHP / 282.6 FT. LB
All in all car feels very fast and strong...and I'm happy with the result. I will be removing the C&L mass air meter and get a new dyno tune. Should be able to squeeze out 270 RWHP.   |
12-02-04, 06:36 PM
|  | Official Member | | Join Date: February 2004 Location: Long Island, NY
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Nice numbers. 
Do you have a 5 speed or automatic? |
12-02-04, 07:33 PM
|  | Banned | | Join Date: June 2000 Location: Allentown State Hospital, Pa
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did you regap the plugs to .40? |
12-02-04, 07:36 PM
|  | Official Member | | Join Date: August 2004 Location: Gilbert, Arizona
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#'s are looking a little low. I have the mods listed in my sig and made 212 rwhp and 284 rwtq. Most 99+ GT's are making right around 250 rwhp stock right? |
12-02-04, 07:49 PM
| | Official Member | | Join Date: February 2004 Location: Long Island, NY
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| | Quote: |
Originally Posted by Sick96Stang #'s are looking a little low. I have the mods listed in my sig and made 212 rwhp and 284 rwtq. Most 99+ GT's are making right around 250 rwhp stock right? | Most 99+ dyno around 230-240 RWHP.
The owner of a local Mustang shop dyno'd his 01 5 speed at 233 RWHP stock.
Last edited by NiteRydaGT; 12-02-04 at 07:53 PM.
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12-02-04, 07:55 PM
| | Official Member | | Join Date: August 2004 Location: Gilbert, Arizona
Posts: 626
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Originally Posted by NiteRydaGT Most 99+ dyno around 230-240 RWHP.
The owner of a local Mustang shop dyno'd his 01 5 speed at 233 RWHP stock. | Wow those dyno alot lower than I thought they did. |
12-02-04, 07:59 PM
| | Founding Member | | Join Date: October 2002 Location: San Antonio, TX
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Originally Posted by Sick96Stang Wow those dyno alot lower than I thought they did. | they are rated at 260 crank hp why would they dyno 250 rwhp? that makes no sense |
12-02-04, 08:02 PM
| | Official Member | | Join Date: August 2004 Location: Gilbert, Arizona
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Originally Posted by FST BLK Pony they are rated at 260 crank hp why would they dyno 250 rwhp? that makes no sense | For some reason I thought I remeber numerous people saying there 99+ GT dynoed at around 250 rwhp but you are right that would make no sense since there crank #'s are 260. |
12-02-04, 08:29 PM
| | Official Member | | Join Date: August 2003
Posts: 580
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With no other mods than the PI swap I went from 189 to 230 after the tune it was 242. Nice numbers man and get rid of that maf its worthless. |
12-02-04, 09:41 PM
| | Member | | Join Date: December 2003
Posts: 36
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good numbers man! hopefully you squeeze out that 270rwhp...thatll be sweet!
what do you guys think my 97 will dyno at??
MODS:
trick flow upper plenum
bbk 75MM throttle body
bbk cold air intake
bbk underdrive pullies
bbk off road h-pipe
american thunder catback exhaust
4.10 gears (dont matter in hp numbers)
bbk timing adjuster
frpp aluminum driveshaft....
last 3 dont really matter.
But how much you guys think i will pull???
oh almost forgot! all that PLUS my PI swap.
Last edited by Blue97GT; 12-02-04 at 09:42 PM.
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12-02-04, 09:42 PM
|  | Official Member | | Join Date: May 2004
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What does it take to get 300 HP at the wheels with a PI swap, Porting? Mild/Agressive Cams? Miracle? I am shooting for 300 rwhp in my 98 gt, and I was planning on a PI headswap with either porting or aftermarket cams....whats it gonna take to get to 300? |
12-02-04, 11:14 PM
| | Official Member | | Join Date: February 2004 Location: Long Island, NY
Posts: 302
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Originally Posted by MyEarsHurt What does it take to get 300 HP at the wheels with a PI swap, Porting? Mild/Agressive Cams? Miracle? I am shooting for 300 rwhp in my 98 gt, and I was planning on a PI headswap with either porting or aftermarket cams....whats it gonna take to get to 300? | Pretty much everything you can think of minus a blower. P/P heads, cams, every bolt on in the book, and a great tune. It's tough but it has been done. |
12-02-04, 11:17 PM
| | Official Member | | Join Date: August 2003
Posts: 580
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Originally Posted by MyEarsHurt What does it take to get 300 HP at the wheels with a PI swap, Porting? Mild/Agressive Cams? Miracle? I am shooting for 300 rwhp in my 98 gt, and I was planning on a PI headswap with either porting or aftermarket cams....whats it gonna take to get to 300? | Ask nickthegenius his is at 290 I believe. |
12-03-04, 12:42 AM
| | Founding Member | | Join Date: December 2000 Location: So. Cal.
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Originally Posted by NiteRydaGT Nice numbers.
Do you have a 5 speed or automatic? | Thanks. I have a 5 Speed. |
12-03-04, 03:20 AM
| | Banned | | Join Date: November 2004 Location: Las Vegas,Nevada
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Yes nice numbers! |
12-03-04, 03:30 AM
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Very nice but how do you pass CA-smog with that beast? :confused: |
12-03-04, 04:58 AM
|  | Official Member | | Join Date: October 2003 Location: fayetteville, nc
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Originally Posted by NiteRydaGT Pretty much everything you can think of minus a blower. P/P heads, cams, every bolt on in the book, and a great tune. It's tough but it has been done. |
what is yours dynoing at? |
12-03-04, 11:37 AM
| | Founding Member | | Join Date: December 2000 Location: So. Cal.
Posts: 567
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Originally Posted by Mel96GT Very nice but how do you pass CA-smog with that beast? :confused: | The beast is completely street legeal and always pass smog test. The h-pipe has cats and I went with shorty headers instead of long tubes for the same reason. Everything looks stock, you can't even tell that I have new heads and intake unless I tell you. 
BTW, I didn't change out the cam to some of the nice aftermarket ones but I know I will eventually have to inorder to break 300 RWHP. |
12-03-04, 12:01 PM
|  | SuperMod
Canadian Colossus | | Join Date: August 2002 Location: Ontario, Canada
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Originally Posted by NiteRydaGT Most 99+ dyno around 230-240 RWHP.
The owner of a local Mustang shop dyno'd his 01 5 speed at 233 RWHP stock. | I've even seem them dyno as low as 220-225rwhp, so his numbers are actually pretty good. |
12-03-04, 12:16 PM
| | Founding Member | | Join Date: October 2002 Location: San Antonio, TX
Posts: 787
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Originally Posted by MyEarsHurt What does it take to get 300 HP at the wheels with a PI swap, Porting? Mild/Agressive Cams? Miracle? I am shooting for 300 rwhp in my 98 gt, and I was planning on a PI headswap with either porting or aftermarket cams....whats it gonna take to get to 300? | if you get every bolt on including long tubes...you could probably do it with VT Stage 2 cams and stock PI heads. |
12-03-04, 03:28 PM
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Originally Posted by FST BLK Pony if you get every bolt on including long tubes...you could probably do it with VT Stage 2 cams and stock PI heads. | Cool, I think thats probably what I am going to do....thats what I have been thinking about for a while now. And then I am gonna get a cutom tune at detroit speedworks...so hopefully I will break 300, but I guess I would be happy with 290 |
12-03-04, 04:11 PM
|  | "the 5.0 owns all" | | Join Date: August 2002 Location: Arkansas
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Originally Posted by FST BLK Pony they are rated at 260 crank hp why would they dyno 250 rwhp? that makes no sense |
Ls1's are rated at 305-310 (98-02) but they dyno around 290-295rwhp...why would they dyno that high..."that makes no sense" 
A stock 99+ Gt 5spd will dyno anywhere from 225-235rwhp... |
12-03-04, 04:20 PM
| | Founding Member | | Join Date: October 2002 Location: San Antonio, TX
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Originally Posted by 5spd GT Ls1's are rated at 305-310 (98-02) but they dyno around 290-295rwhp...why would they dyno that high..."that makes no sense" | actually 01-02's will dyno 300+ all day long
but there is a reason for that...its called a vette |
12-03-04, 05:05 PM
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12-03-04, 05:11 PM
| | Founding Member | | Join Date: December 2000 Location: So. Cal.
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Originally Posted by tomustang did you regap the plugs to .40? | No. Should I and Why ?
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