Hennessey ZR700 upgrade (video)
Feb 4, 2009 | 11:37 AM
#1
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From: Zoo York
Hennessey ZR700 upgrade (video)
Feb 4, 2009 | 01:06 PM
#4
Seriously. Change it.
Joined: Jan 2009
Posts: 5,505
From: Sonoma, CA
Corvette Zr1: Corvette ZR1 Independently Dynos 530 Rear-Wheel Horsepower
Feb 4, 2009 | 07:51 PM
#6
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Joined: Feb 2008
Posts: 2,866
From: TO
Published reports have rwhp on a stock ZR1 at 530, so Hennessey is adding about 40 hp....either way, I would want more if I was going to be paying Hennessey-type money for an upgrade.
Corvette Zr1: Corvette ZR1 Independently Dynos 530 Rear-Wheel Horsepower
Corvette Zr1: Corvette ZR1 Independently Dynos 530 Rear-Wheel Horsepower
Two separate 'Vettes were tested, and the average output was about 535 horsepower at the rear wheels. After factoring in the normal 15-percent drivetrain losses for a rear-wheel drive car, that's pretty darn close to the claimed 638. After a bit of tinkering the team got that number up near 570, saying it's running a bit rich from the factory.
source
I bet it varies from car to car, and I wouldnt be surprised if someone beats that mark with stock car, there are freaks of nature
Bottom line, Hennessey is still lame.
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