3800 Stock GTP Dyno's

[PANDA]

I was searching for some dyno numbers for a stock GTP. I remember people saying GTP's are underestimated and they produce more power than GM says they do (on clubgp). But GM but advertizes lower HP ratings so people save on insurance or somthing. Someone said a stock GTP can will put down 250-260HP/290-300TQ at the crank stock.

I found some sites with dyno numbers for stock GTP's.

http://www.thrashercharged.com/L67_htm/dynodata.shtm
195HP/265HP @ the wheels with only a cat-back exhaust

http://dynoperformance.com/search_details....=296&safeid=296
199HP/233TQ @ the wheels stock.


Why is the torque so diffrent on these dynos? Anyone know what a stock GTP will do on a dyno?

Click to read more...

 

[TommyGloves]

FWIW - My stock 03 SSEi with a FWI did the following:

Run 1: 201.2 whp / 218ft lbs (AFR 11.7)
Run 2: 201.6 whp / 220ft lbs (AFR 11.6)

http://tg.dnsalias.com/sseibaselinedyno.jpg

 

[Sinister Drag Designs]

hpp mag...dyno'ed a gp with a 3.4 and a hot-cone intake.. made 205 hp and iirc about 235 lb of torque..with..between 5-7deg of KR..on average

it was the ssic install...i still cant belive that thing gave 26hp and 45lb of tq extra with just the ssic, and the 3.4

 

[BigJermGTP]

Originally posted by vipermike2002@Jan 25 2006, 10:14 AM
Someone said a stock GTP can will put down 250-260HP/290-300TQ at the crank stock.
I found some sites with dyno numbers for stock GTP's.

http://www.thrashercharged.com/L67_htm/dynodata.shtm
195HP/265HP @ the wheels with only a cat-back exhaust

http://dynoperformance.com/search_details....=296&safeid=296
199HP/233TQ @ the wheels stock.


Why is the torque so diffrent on these dynos? Anyone know what a stock GTP will do on a dyno?

[snapback]111578[/snapback]​

Ratings are from two different ends. At the wheel and at the crank are totally different. Your gonna get less at the wheels because of eveything else the engine needs to power in order for the car to run. At the crank will always be more because its just and engine running by itself, it's not powering an alternator, pumps, transmission etc. etc. etc.

Correct me if im wrong but thats why the numbers seem so weird. I dont measure power in HP I measure it in 1/4 mile.

 

[PANDA]

Ratings are from two different ends. At the wheel and at the crank are totally different. Your gonna get less at the wheels because of eveything else the engine needs to power in order for the car to run. At the crank will always be more because its just and engine running by itself, it's not powering an alternator, pumps, transmission etc. etc. etc.

Yeah I know that. GTP's make around 240 crank HP and around 200 wheel HP. But I was asking how one dyno shows a almost stock GTP making 265 wheel TQ while another making is 233 wheel TQ.

 

[imported_1fastGTP]

a catback cant add that much torque can it?

 

[Partyhardoo69]

Originally posted by 1fastGTP@Jan 26 2006, 11:36 AIDS
a catback cant add that much torque can it?

[snapback]111790[/snapback]​

probally dyno'd different