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The real supercharged Dodge Vipers

by David Zatz on

In January 2015, Patrick Rall posted a story on Allpar about rumors of a supercharged Dodge Viper. Recently, another publication claimed that Dodge has received a supercharged Viper delivering over 800 horsepower, beating the Hellcat V8.

According to Mr. Rall’s information, the Viper is not factory built, but was developed by Arrow Racing, with Chrysler’s help at least in getting permission to alter the computer programming. The supercharged Viper is to be sold at the Viper Exchange a/k/a Tomball Dodge.


There are three different packages, and all are “off-road use” only:

  • Computer (PCM) only.
  • Computer, heads, and fixed cam.
  • Computer and low-profile, Rootes-style supercharger.

The stage 3  package is the one with the supercharger. It brings around a 250hp/200 lb-ft gain, using a 4.3L twin screw supercharger that pushes engine output to around 900hp. It also includes a custom ECU, long-tube headers and exhaust, air-to-water intercooler and pump, high-flow fuel system, modified timing belt cover, front pulleys, idler system,  front strut tower beam (for space), and custom coil pack covers. This requires installation at the dealership.

Supercharged Dodge Viper on dyno

Stage 1 is a revised computer for 20-25 hp and more torque across the rpm range; Stage 2 adds heads, cam, and other upgrades, for 75-80 hp more and, again, more torque.

All the packages are good for the 2013-15 Viper series, as hinted at in other articles.

Does this mean Dodge itself is looking at a supercharged Viper? Possibly, but if so, they would probably opt for a smaller power increase, because Dodge has a 200,000 mile lifespan target and other constraints, including making the car street-legal.

Other rumors claim that the Viper is going away, and then there’s the possibility of making a Ferrari-style car — a racing car that’s barely modified for the street from the tubular chassis up — perhaps designed around the Hellcat to save the development and parts costs of a V-10. There are all sorts of rumors and possibilities, but it seems clear that Ralph Gilles is fighting to keep the Viper alive and kicking.


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