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#63126 - 01/18/06 11:34 AM Re: Dyno Saturday
HercMan(Rob) Offline
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Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
Remember stock whp for the GTPs is only 200.
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#63127 - 01/18/06 02:20 PM Re: Dyno Saturday
fallen angel Offline
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Registered: 12/30/05
Posts: 115
Loc: kingston ny
wow... i would have thought they had more than that. Ok i think i change my guess to around 230whp
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#63128 - 01/18/06 05:25 PM Re: Dyno Saturday
Arcxnus Offline
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Registered: 04/05/05
Posts: 1921
Loc: Texas
245-250. :s

And three million torque! lol
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Quote:
Originally posted by HercMan:
Sounds like corrosion has had it's way with your nuts.
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#63129 - 01/18/06 05:48 PM Re: Dyno Saturday
Richard Candelario Offline
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Registered: 12/15/05
Posts: 5286
Depends on what year, the 00 GP GTP put out 240. Not knowing what mods were put on, ummmm, 289 whp, 297ft/lbs
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98 L36/MM5
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#63130 - 01/18/06 05:50 PM Re: Dyno Saturday
Richard Candelario Offline
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Registered: 12/15/05
Posts: 5286
Boy, do I feel like a 'tard. More likely 298/305
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WizAire CAI w/9" K&N & HV3, 2.5" d/p w/h/f cat, Cobra CB, PowerSlot slots w/Hawk HPS, GR-2s, GMPP handling kit, NextLevel STBs, Pilot Sport A/S Plus tires.

98 L36/MM5
RaC
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#63131 - 01/18/06 06:13 PM Re: Dyno Saturday
4rsssfed_grandprix98 Offline
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Registered: 08/05/04
Posts: 644
Loc: South Bend
Quote:
Originally posted by Richard Candelario:
Depends on what year, the 00 GP GTP put out 240. Not knowing what mods were put on, ummmm, 289 whp, 297ft/lbs
I think you are thinking of crank horspower, and yes, all years 97-2003 were rated 240 crank horse power (200 whp)
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#63132 - 01/18/06 06:47 PM Re: Dyno Saturday
fallen angel Offline
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Registered: 12/30/05
Posts: 115
Loc: kingston ny
do the trannies really rip off 40hp? thats just insane.
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#63133 - 01/18/06 06:55 PM Re: Dyno Saturday
AustinGTP Offline
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Registered: 05/23/03
Posts: 8078
Loc: Austin, TX
240 laugh
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Died 5/1/08, resurrected 5/15/08
ASCD SD hood, 17" Bullitts, Overkill PCM, 3.4" Pulley, NGK TR55IX, K&N 9" cone filter, JimmyC D/P, U-bend removed, Flowmaster 40 series, Hooker big bore tips with resonators, S/B brake lines, drilled/slot rotors, GMPP handling kit, KYB struts, F&R strut supports, HID's, LED's, 2.5" Air Dam, red GTP overlays on custom badges, white rear insert.
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#63134 - 01/18/06 07:15 PM Re: Dyno Saturday
HercMan(Rob) Offline
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Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
Most auto-trannied cars lose about 20% of the hp through losses in the tranny and rear-ends. Manuals don't lose as much.

Auto's lose so much because the tranny is a big hydraulic pump there really is no direct mechanical connections. So as the bands slip hp is lost. Where as manuals rely on a friction clutch and is a more of a direct mechanical linkage then the auto.
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#63135 - 01/18/06 10:11 PM Re: Dyno Saturday
fallen angel Offline
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Registered: 12/30/05
Posts: 115
Loc: kingston ny
so you're telling me a 1000 hp car would use 200 of that power to run the tranny? something not right there.
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#63136 - 01/18/06 10:22 PM Re: Dyno Saturday
crimpton Offline
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Registered: 05/01/02
Posts: 2126
Loc: Portland Or.
fallen took my guess.....

I'll go with 225WHP..... smile
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#63137 - 01/19/06 06:56 AM Re: Dyno Saturday
HercMan(Rob) Offline
Member
Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
Not that the tranny uses that 20% just that with the way auto tranny's are designed you lose about 20%. If you do a google on crankshaft hp vs wheel horspower you should find more info that will explain it better.
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#63138 - 01/19/06 10:05 AM Re: Dyno Saturday
vmschumacher Offline
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Registered: 07/11/05
Posts: 131
Loc: Imperial, Mo
Quote:
Originally posted by fallen angel:
so you're telling me a 1000 hp car would use 200 of that power to run the tranny? something not right there.
A 1000hp car will not loose anywhere near that much because most run a direct drive system (Lenco) so that they get the most out of it. Even the classes that are designed for automatics, they still are built to give back the horsepower. I.E. last year at a dyno run I watched a car tune at 1650chp, then axle dyno'd at 1602whp. not much loss.
But, if you have the money, you don't loose much right? cheers
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#63139 - 01/19/06 03:36 PM Re: Dyno Saturday
fallen angel Offline
Member
Registered: 12/30/05
Posts: 115
Loc: kingston ny
wow... why the hell did our cars get the bad trannies? gm trannies are some of the best usually
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#63140 - 01/19/06 06:12 PM Re: Dyno Saturday
4rsssfed_grandprix98 Offline
Member
Registered: 08/05/04
Posts: 644
Loc: South Bend
Quote:
Originally posted by fallen angel:
wow... why the hell did our cars get the bad trannies? gm trannies are some of the best usually
out of all the cars that house the L67 the grand prix has the most "beefed" tranny. We did get the good tranies eek
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