Roush Package


MartinHerman

GT Owner
Jan 19, 2009
27
Hunt Valley, MD
Hello, I'm looking to buy and 06' GT and the seller says it has a "roush package" and is now 700HP? Does this sound right and what would the package have cost? pro's and con's?
 

dbk

The Favor Factory™
Staff member
Le Mans 2010 Supporter
Jul 30, 2005
15,187
Metro Detroit
It's just a pulley/tune. It's likely somewhere around 580-600rwhp. It probably cost 2k. It's not really a pro or con on a used car, because you'd probably end up doing it anyways, and it doesn't add or detract value from the car in my eyes since it can easily be reversed.
 

RALPHIE

GT Owner
Mar 1, 2007
7,278
There is also another "Roush" package, applied to all the European exports, which installed the correct and necessary hardwares to meet the homologation requirements of the various countries where the cars were being sold.
 
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paul b

GT Owner
Nov 2, 2006
810
Find out if they used a hand held programmer like the SCT, you will need it to return to the stock tune.
 

jaxgt

GT Owner
Mark IV Lifetime
Jul 12, 2006
2,795
Not likely 700hp. Don't think you can obtain that without going for a Whipple S/C. Most pulley and tunes can get you around 600hp AT THE REAR WHEELS, depending on the exhaust. I have one car that dyno'd at 600hp and one at 630hp (different exhaust, different time of year). To be honest, I can't feel the difference between them much. Unless the dealer is one of our 2 forum sponsors (Bernie or Shelby), I would be very skeptical of their claims - this being a perfect example.
 
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Neilda

GT Owner
Oct 19, 2005
3,559
London, UK
Avro Motors in the UK produced the Avro Mirage in conjunction with Roush. It's probably not one of these cars, but I'm posting for your interest.

"Surrey-based Ford GT specialist Avro Motor Cars has joined forces with Roush Technologies to develop this latest GT-based supercar, the Avro 720 Mirage Ford GT.

Power is boosted to a minimum of 720bhp at 6950rpm and torque rises to 627lb ft at 4800rpm thanks to the fitting of a larger Whipple supercharger and revised throttle bodies.

The car has been derestricted and boasts a top speed of 220mph so owners will be thankful that the braking system has also been upgraded, courtesy of AP Racing. The suspension has been tweaked too, with the ride height set some 25mm lower than standard, and the front and rear tracks are both 5mm wider than before."
 

GTED

GT Owner
Apr 4, 2006
783
I think the quoted HP is at the crank; therefore, ~600 rwhp is about 700hp at the crank using the convention of 12% to 15% parasitic power loss.

GTED

Not likely 700hp. Don't think you can obtain that without going for a Whipple S/C. Most pulley and tunes can get you around 600hp AT THE REAR WHEELS, depending on the exhaust. I have one car that dyno'd at 600hp and one at 630hp (different exhaust, different time of year). To be honest, I can't feel the difference between them much. Unless the dealer is one of our 2 forum sponsors (Bernie or Shelby), I would be very skeptical of their claims - this being a perfect example.
 

B O N Y

MODERATOR & FGT OWNER
Mark IV Lifetime
Sep 5, 2005
12,110
Fresno, Ca.
The before pull is with Heffner tune, pulley and accufab exhaust set up for Kal-fool-nia gas. The after is with the Gen I Whipple
 

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