My brother-in-law bought a used 2011 GT500
My brother-in-law bought a used 2011 GT500
My brother-in-law bought a used GT500 last week. Black on black exterior with black interior. It's wicked looking! I love the black stripes on the black paint. Very subtle, almost like ghost flames. He had it dynoed at Fun Ford Weekend in Houston and it made 523HP / 511TQ at the rear wheels. I'm trying to get him to join TMS and stop hanging around with his Vette buddies.
Originally Posted by AlsCobra
Looks good. Did he buy it from a guy in Louisiana? Looks like my buddy's car he just sold.
Originally Posted by bpmurr
I'm assuming it came with a pulley swap because that GT500 ain't stock with those HP numbers. Looks good! 

Those numbers are way too high for a stock GT500. If it's still running the stock pulley that dyno is way off. The car should be running in the 480-490 range to the wheel at most. 523/511 is pulley swap territory.
Last edited by bpmurr; Mar 27, 2012 at 07:38 AM.
Originally Posted by bpmurr
Those numbers are way too high for a stock GT500. If it's still running the stock pulley that dyno is way off. The car should be running in the 480-500 range to the wheel at most.
A lot of shops inflate dyno numbers. Considering I had the same car and wasn't coming close to 523 bone stock on a properly configured Dynojet. Nor was anyone I knew from the GT500 forums I frequent. As for tuning with just the stock pulley the factory tune is already pretty aggressive. There isn't a whole lot of room for improvement unless you want to take it to the edge.
Last edited by bpmurr; Mar 27, 2012 at 07:42 AM.
Originally Posted by bpmurr
Those numbers are way too high for a stock GT500. If it's still running the stock pulley that dyno is way off. The car should be running in the 480-490 range to the wheel at most. 523/511 is pulley swap territory.
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