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Heffner Twin-Turbo Viper SRT-10


Forum Addict
Oct 4, 2004
From http://fast-autos.net

...Also adding to Heffner's reputation is that he just happens to build the fastest Vipers on the planet. Heffner Vipers own 1/4 mile records including the quickest Viper using the standard 6-speed manual (8.75 sec @ 168 mph) as well as the fastest Viper using an automatic transmission (8.26 sec @ 176 mph). Heffner-built cars also compete and do very well in the V10 Nationals, a Dodge Viper-specific drag racing. How much power are these cars making to achieve these times? Using an in-house dyno, the modified V10 engines can make 1100 rear-wheel-horsepower on 93 octane and as much as 1500 rear-wheel-horsepower on racing fuel.

Not all of the Vipers built by Heffner are necessarily this extreme. Owners can purchase a variety of engine packages to suit their budget. Naturally aspirated, supercharged, or turbocharged packages are all available, ranging anywhere from 575 horsepower all the way to 1300 horsepower. The featured car achieved 902 rear-wheel horsepower and around 957 lb-ft rear-wheel torque on 91 octane.

For this particular Viper, the list of modifications runs longer than just about any car out on the street. The basic twin-turbo package on the car includes not only the dual turbochargers, but also the addition of a front-mounted intercooler, an AEM engine management system, upgraded air filters, a modified fuel delivery system, and larger fuel injectors to name just a few. Some of the other performance modifications in addition to the standard package include custom forged pistons, upgraded intake and exhaust valves, and a three inch stainless steel cat-back exhaust system.

For the full article Click Here

Base Vehicle:
2004 Dodge Viper SRT-10
Performance Modifications:
Heffner Twin-Turbo Package:
- Stainless Steel Turbo Headers
- Stainless Steel Turbo Downpipes
- Twin Ball Bearing Turbochargers
- Twin Tial 46mm External Wastegates
- Twin Tial 50mm Blow Off Valves
- Grade 8 Turbo Intallation Hardware
- Powdercoated Custom Intercooler Plumbing
- Chrome Plated Throttle Body Tubing
- 3" Custom Air Filter Tubing
- Twin K&N High Flow Air Filters
- Silicone Tubing Connectors
- T-Style Hose Clamps
- Front Mounted Air-to-Air Intercooler
- AEM Engine Management System
- 3 Bar MAP Sensor for AEM
- Coolant Temperature Sensor for AEM
- Boost Control Solenoid for AEM
- Speed Snesor for AEM Traction Control
- Stainless Steel Turbo Oil Feed Lines
- Stainless Steel Turbo Oil Drain Lines
- 1000 Horsepower External Fuel Pump
- Twin External Fuel Filters
- Adjustable Fuel Pressure Regulator
- Underhood Fuel Pressure Gauge
- Extruded Aluminum Fuel Rails
- 75 lb/hr Fuel Injectors
- Upgraded Fuel Injector Connectors
- Upgraded Fuel Feed Lines
- Upgraded Fuel Return Lines
- Aluminum Fuel Feed and Return Fittings
- Crankcase Breather Tank
- Crankcase Breather Lines
- Colder Heat Range Spark Plugs
- High Temperature Silicone Wastegate Control Lines
- Fuel Pump Relay and Wiring
- Fuel Pump Isolation Bushings

Additional Modifications:
- Lightweight Wrist Pins
- Custom Forged Pistons
- Billet Steel Connecting Rods
- Severe Duty Connecting Rod Bolts
- Offset Grind Crankshaft & Narrow Connecting Rods
- Mopar Main Bearings
- Clevite H Series Rod Bearings
- Childs & Albert Piston Rings
- Ported and Polished Intake & Exhaust Runners
- Bronze Valve Guides
- 2.02" Stainless Steel Intake Valves
- 1.60" Stainless Steel Exhaust Valves
- Teflon Valve Seals
- Titanium Valve Retainers
- Heavy Duty Valve Springs
- Three Angle Valve Job
- T&D Roller Rockers
- Chromoly Pushrods
- Valve Cover Spacers
- Upgraded Hydraulic Roller Lifters
- Custom Hydraulic Roller Turbo Camshaft
- 3" Stainless Steel Cat Back Exhaust System

Drivetrain Modifications:
- Quaiffe Differential
- Centerforce Clutch

Suspension Modifications:
- Moton Club Sport Coilovers

- Wheels F: HRE 840R 10.5in x 19in
- Wheels R: HRE 840R 13in x 20 in
- Tires F: Pirelli 275/30/19
- Tires R: Pirelli 345/25/20

- Stoptech Drilled Brake Rotors
- Stoptech Braided Brake Lines

Exterior Modifications:
- Autoform Roll Bar

Interior Modifications:
- Team Tech Six Point Harnesses
- Autometer Boost Gauge
- B&M Short Throw Shifter

Sound System:
- Pioneer CD Player/Navigation System w/ Touchscreen
- Pioneer Piavicdi Head Unit
- Memphis Amplifers
- Memphis Speakers
- Memphis Subwoofers
- Pioneer CDx P1280 12-disc Changer




For more pictures and wallpapers Click Here
ahhh crap, was on holidays at that time and must've missed that

someone pls :lock: