Hennessey Cadillac CTS-V with 700 HP
The Cadillac CTS-V is already some sort of anomaly. This luxury Sedan looks like a buff CTS, but nothing can prepare you for the beast that lurks under the hood. The stock CTS-V has a mildly de-tuned version of the Corvette ZR-1 LSA engine. This V-8 is supercharged and puts out an amazing 550 HP. Well super tuner Hennessy wasted no time cranking up the Horsepower with some mild bolt-on parts in the form of their V700 power package. The result is 700 HP and a lot of tire shredding fun!
The LSA engine that powers the Corvette ZR-1 already has close to 650 HP on tap. So it really took nothing more than a cold air intake, smaller supercharger pulley, and engine tuning to up the ante in the CTS-V to over 600 HP. Getting another 100 Horsepower out of the LSA followed the normal big displacement upgrade path. A few other bolt-ons such as new headers and a high flow exhaust open up the airways, while a new intercooler takes care of the intake charge. The other modifications are done to heads which include a high flow head and camshaft upgrade.

Final power numbers check in at 707 HP and 701 lb-ft. of torque. This is enough to rocket the Cadillac CTS-V from 0-60 in 3.1 seconds. The ¼ is eclipsed in 10.9 seconds and the CTS-V will top out at a mind blowing 211 MPH! Now keep in mind the Cadillac CTS-V weights in at a hefty 4200 pounds! This luxury rocket will destroy almost any car with a full leather interior will all the amenities you could possibly want. What’s the price on this package you might ask? Who knows….and who cares, because I want one!
The V700 Package Includes:
• HPE Cold Air Induction System
• Supercharger Pulley & Snout Upgrade
• HPE Engine Management Upgrade
• Long Tube 1 7/8 inch Stainless Steel Headers
• 3 inch Stainless Steel Mid Pipe Exhaust
• High Flow Catalytic Converters
• Intercooler Heat Exchanger System Upgrade
• V700 Camshaft Upgrade
• V700 High Flow Cylinder Heads
• 160 Degree Thermostat
• Hennessey Embroidered Head Rests
• Serial Numbered Dash Plaque
• Serial Numbered Plaque in Engine Compartment
• 1 Year / 12,000 Mile Warranty
source:http://www.hennesseyperformancestore.com/v700.html

Geez now that blows the regular CTS out of the water. If I remember correctly the 2004 only had 220 hp. I am not sure how much the 2010 has but no way in hell is in the 700s. I think more like 340 or something. Still that is one mean machine.
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700HP WOW! What a caddy! I have a Deville, but would love to own a CTS. Its one of the sharper cadillac automobiles made in recent times.
I am lovers of luxurious car, the car shown here looks fabulous and looking at the hp, i can imaging how it can be powered.