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New Motor Trend Comparison


2sharpie
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GT500 vs Hennessey vs Challenger............... some great new numbers for the GT500, and I still wouldnt buy that POS Camaro (however tweaked Hennesseys test car is this time)! And they still pick the Shelby as the winner.

 

 

 

http://www.motortrend.com/roadtests/coupes...srt8/index.html

Edited by 2sharpie
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Nice find. I'm still a bit troubled, however, at the 1st - 2nd shift issue that many folks on this forum are experiencing and now even MT is seeing. I wonder if in their quest to get better gas mileage by updating the overdrive gears Tremec didn't screw something up with the 1-2 syncros. The editor mentions the tranny felt "...broken..."; geesh (which, incidentally, could be the case if it's a press car that has been thrashed). I haven't experienced this yet because I only have 200 miles so far, but I'll know if this is different from my 07' soon enough. If so, I would expect to see a TSB on this one fairly quick from Ford.

 

Joseph (FordGeek)

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GT500 vs Hennessey vs Challenger............... some great new numbers for the GT500, and I still wouldnt buy that POS Camaro (however tweaked Hennesseys test car is this time)! And they still pick the Shelby as the winner.

 

 

 

http://www.motortrend.com/roadtests/coupes...srt8/index.html

For the 10 grand differential in price you could stick on a KB, custom tune, and the same Pirelli's and the Shelby wins everything. Add the KR muffler and they even win the sound.

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Another thing to keep in mind. The compression ratio on the SS engine is around 10.4:1 - not optimal at all for supercharging and not the same as the block found in the CTS-V or ZR-1 (they are both in the 9.0:1 range). By comparison the Shelby has a ratio of 8.4:1 and just begs for more than just 8 lbs. of boost. So, if you really think about it, Hennessey is probably running this thing at the absolute extreme to make sure he gets his media whore points. But, I can't imagine this power level under these compressions can be sustainable to the degree that he's willing to back it up with a 3 year/36000 mile warranty. My hunch is the "production" version that folks can actually buy will be detuned for reliability; hence why the dyno figures on this thing indicates 600+ hp at the crank. To be honest, I would debate a spontaneous race with a CTS-V more than any SS; Hennessy or otherwise. Especially if the CTS-V owner has gotten smart and is running closer to 15 lbs. of boost with an agressive toon. On engine that size it's pretty formidable.

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