© 2010 by Hib Halverson
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Back on the 7th of December, at Maryland Raceway, a Lingenfelter customer named Scott Weick, was in the nines with an '09 ZR1 fitted with a few Lingenfelter supercharger bolt-ons. At this dragstrip near Budds MD, Weick ran a 9.81-sec quarter mile at 145.74-mph. On the same day at the same track, he backed that up with a 9.86/144.67. The car was said to have run a third 9-sec. pass but no data for that was available when we posted this article.
Interestingly, other than the supercharger system, the engine in this car was stock. It even had a stock exhaust. With just some changes to the blower, the car made an astonishing 740-hp and 720 lbs/ft torque at the rear wheels and that's SAE-corrected. Figuring a 15% correction for parasitic loss, that's 870 SAE at the flywheel.
Here's a list of modifications with which got LPE about a 200-hp increase at the wheels:
The supercharger boost was said to be "consistent over the rpm range" and was around 17.5-psi.
There is a video of the 9.81 run at www.lingenfelter.com/video. Watch the closely how the Weick launches the car. Interestingly, the car uses a stock clutch and it lifts the front tires off the ground. A near-stock car does a wheelie? Holy crap!!
Here's some chassis dyno data from this car. Image: Lingenfelter Performance Engineering: