Adam Montague, chief spanker over at Spankin Time Motorsports in San Bernardino, CA (www.spankintime.com) has built some pretty amazing late model Challengers, Chargers and Jeeps. His own ride is a built 6.1 Hemi stock-block 09 Challenger that, thanks to a Kenne Bell 4.2L twin-screw billet supercharger, makes 931 horsepower at the wheels. Running its full porker weight of 4610 lbs., the Challenger turns 9.97 @ 130 MPH in the quarter. One of his customers runs a KB-blown 5.7 Hemi Charger that also burns up the strip in the mid-9s.
We ran some Kenne Bell blower install highlights in our February issue, and well show you a couple more here. Were also adding here the dyno charts that compare the stock vs. supercharged versions of the Gen III 5.7 and 6.1 Hemis. You can see a lot more tech info on Kenne Bell by checking out their website: www.kennebell.net.
6.1 Hemi stock vs. 6.1 Hemi Supercharged
5.7 Hemi stock vs. 5.7 Hemi Supercharged
THE REAL NUMBERSENGINERWHPENG HP@RPMRWTQENG TQ@RPMBOOST PEAK5.7 STOCK33239152003574203900N/A5.7 SCHD476560550048757343007.86.1 STOCK36442856003373964700N/A6.1 SCHD514605620047756130008.0
Dyno test results on Kenne Bells chassis dyno compared stock to supercharged 5.7 and 6.1 Hemis,
both automatics with the base tune and 93 octane pump gas.
KBs kit is 100% complete with everything you need. A 155-page super-detailed photo how-to installation manual makes this a practical DIY project. The new kit for the 5.7 Hemi is in demand because there are a ton more 5.7s than 6.1s out there. The 5.7 kit includes new fuel rails (shown). The 6.1 Hemi retains the stock fuel rails.
The stock throttle body bolts to the blower intake. The system is overbuilt so you can up the power by going to a larger throttle body, injectors, new tune and possibly headers without having to buy a larger supercharger.
Competed installation on the 5.7 Hemi.