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#63141 - 01/19/06 06:16 PM

Re: Dyno Saturday

fallen angel Offline

Member

Registered: 12/30/05
Posts: 115
Loc: kingston ny

yea... I guess so. but losing 40hp? How much can the stock trannies take anyways in GTP's? My guess is somewhere around 320hp before things start breaking.

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#63142 - 01/19/06 06:19 PM

Re: Dyno Saturday

AustinGTP Offline

Member

Registered: 05/23/03
Posts: 8078
Loc: Austin, TX

I think the 4T65E-HD's are rated at 280hp/300tq, I think.

_________________________
Bobby

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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#63143 - 01/19/06 07:48 PM

Re: Dyno Saturday

shawny519 Offline

Member

Registered: 11/25/05
Posts: 138
Loc: Kansas

whats WHP?

_________________________
2000 Grand Prix GTP...Memphis 1000 watt RMS amp, 2 Audiobahn 15"'s in custom box, Sony X-Plod Deck, and Bose package. Pontiac windshield decal, bumper fill ins, hood scoop, GTP overlay, U-bend delete, 180 T-stat, FlowMaster 40's, 3.5" pulley, CAI.

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#63144 - 01/19/06 07:51 PM

Re: Dyno Saturday

shawny519 Offline

Member

Registered: 11/25/05
Posts: 138
Loc: Kansas

never mind

I'll read the whole thread next time hehe

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#63145 - 01/19/06 08:01 PM

Re: Dyno Saturday

HercMan(Rob) Offline

Member

Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas

It's not that our tranny's are bad because of that it's all auto trannies. It has to do with physics. HP loss is about 17%-22% on any given automatic tranny powered car. FWD is actually experiences a smaller loss the a RWD. Only because your not taking that power and changing directions by 90*s and spinning gears in a heavy oil. Many factors play into dynoying. Gear selection, tire size, alignment etc. Remember a dyno only measure how fast you can get a known weight to spin. There are fancier dynos that will take input supplied by the operator and can a more precise reading.

_________________________
http://www.patriotguard.org

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#63146 - 01/20/06 11:21 AM

Re: Dyno Saturday

4rsssfed_grandprix98 Offline

Member

Registered: 08/05/04
Posts: 644
Loc: South Bend

Quote:

Originally posted by AustinGTP:
I think the 4T65E-HD's are rated at 280hp/300tq, I think.

this is correct

_________________________

VS Cam,CompCams lifters,ZZPpushrods,Rollmaster double,4"intake,PLog headers,3"exhaust,IntensePCM,3.3"mps,ZZPHDTrans,3.29gears,2500 stall,GMPP adjustable suspension,TB spacer,160*tstat

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#63147 - 01/20/06 10:27 PM

Re: Dyno Saturday

fallen angel Offline

Member

Registered: 12/30/05
Posts: 115
Loc: kingston ny

thats it? i dont think I should plan on modding much anymore.

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#63148 - 01/21/06 02:22 PM

Re: Dyno Saturday

4rsssfed_grandprix98 Offline

Member

Registered: 08/05/04
Posts: 644
Loc: South Bend

Looks like AustinGTP took the win with a guess of 240whp, my actual best dyno run was 242whp and 255tq, they're printer was down so they couldnt print the charts but they are emailing them to me monday, I will post when I get them

_________________________

VS Cam,CompCams lifters,ZZPpushrods,Rollmaster double,4"intake,PLog headers,3"exhaust,IntensePCM,3.3"mps,ZZPHDTrans,3.29gears,2500 stall,GMPP adjustable suspension,TB spacer,160*tstat

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#63149 - 01/21/06 03:55 PM

Re: Dyno Saturday

HercMan(Rob) Offline

Member

Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas

cool beans

_________________________
http://www.patriotguard.org

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#63150 - 01/21/06 04:30 PM

Re: Dyno Saturday

crimpton Offline

Member

Registered: 05/01/02
Posts: 2126
Loc: Portland Or.

Nice!
Thanks for sharing!

_________________________
Clint Anderson
'00 Black GTP Sedan

http://pdxcgp.com

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#63151 - 01/21/06 05:12 PM

Re: Dyno Saturday

fallen angel Offline

Member

Registered: 12/30/05
Posts: 115
Loc: kingston ny

you didnt change the pully?

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#63152 - 01/21/06 06:20 PM

Re: Dyno Saturday

4rsssfed_grandprix98 Offline

Member

Registered: 08/05/04
Posts: 644
Loc: South Bend

Why would I?

_________________________

VS Cam,CompCams lifters,ZZPpushrods,Rollmaster double,4"intake,PLog headers,3"exhaust,IntensePCM,3.3"mps,ZZPHDTrans,3.29gears,2500 stall,GMPP adjustable suspension,TB spacer,160*tstat

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