Lethal Performance/VMP 725rwhp 3.4L Gen II Whipple Supercharger Package
All new at Lethal Performance is the 725rwhp 3.4L Whipple package. The 3.4L is indeed the most powerful supercharger on the market. The fastest twin screw 03-04 Cobra, Lightning and GT500 all currently run the 3.4L Whipple. In addition to that the 3.4L that we all knew just got better. That's because the 3.4L Whipple blowers now ship with the new Gen II rotor profile which flows more air, takes less rpm's to spin and offers higher boost levels than the previous rotor style. We've seen an increase of up to 2psi at the same pulley size then the Gen I blower. This means increased efficiency and performance
So we've taken the 3.4L Whipple and put together a complete package for a bolt-on kit capable of 725rwhp. The 725rwhp package uses the stock GT500 fuel pumps along with Sieman Deka 63lb Injectors to supply enough fuel to the engine. No external pump driver required. Since the 670rwhp package was at the limit of the stock MAF we needed to tune in a Diablosport MAFIa which gave us more range to make more power. Best of all is that the 725rwhp can be made with pump gas.. The other upgrade the 725rwhp package offers over the 670rwhp package is the use of the huge 160mm Super Mono Throttle Body. With the addition of the 160mm throttle body we saw an increase of boost by 2psi in addition to an amazing 60rwhp. Justin@VMP tuning not only took the time to dial the car in to make some sick power but also had driveability in mind. So whether you're at the track or cruising around town with this 725rwhp beast you can enjoy the car.
This kit also allows you to run the stock hood and stock strut tower brace and will drive on the street just like the car did when it came from the factory.
No blower package performs without the required tuning and that's why we've teamed up with Justin Starkey of VMP Tuning to offer the best performing tunes available for our Whipple packages. After extensive testing on our shop GT500 we're proud to say that this kit will turn your GT500 into a beast and it still looks and drives like it's stock.
**The 3.4L Installation Kit consists of K-Member Spacers, Sway Bar Bracket Relocation Spacers, Custom Motor Mounts, Fuel Rail Spacers (Not needed for the 670rwhp Kit), All bolts, hardware and installation instructions for a complete and easy installation. We at Lethal Performance have tested the use of the K-member spacer kit both on the street and the track and there's no way to tell that it's even on the car. Making sharp turns or taking long road trips provide the same ride quality as a stock car. The components in this kit simply allow the blower to fit properly under the stock hood and does not change any dynamics or compromises any ride quality of the stock suspension
**To attain the 725rwhp in this package some exhaust modifications were used. Kooks Longtube Headers w/Offroad X-Pipe and the Magnaflow 3" Catback System. Horserpower levels may also vary depending on weather, elevation and other variables. The testing that was done to create this 725rwhp package was in warmer FL weather with temperatures in the mid 80's. Customers in cooler temperatures will see higher gains due to cooler air temperatures.
The Lethal Performance/VMP 725rwhp Kit Includes: -3.4L Gen II GT500 Whipple Supercharger Kit -160mm Super Mono Throttle Body -JLT Carbon Fiber High Flow Intake -VMP Custom Tuned Xcal 2/3 -(8) Siemen Deka USCAR 63lb Injectors -Whipple 3.4L Installation Kit -Set of NGK TR6 Spark Plugs
Printable Version
Lethal Performance 725rwhp Gen II 3.4L Whipple Package! - 
