Hemi 2008-2014 Off-Road / Street Rod 5.7L, 6.1L Tuner Kits. Attractive proven top mount – forward facing retro design with real “ram tube” cool air system.  No long power robbing restrictive manifold runners to heat soak“Exposed” supercharged runs cooler, because it’s not buried under manifolds, intercoolers, covers, etc.

Huge rear entry MAMMOTH Inlet Manifold (#1 in air flow & HP potential, Intercoolers, covers, etc. Whisper quiet operation – standard rotation (no gear noise).

EXCLUSIVE FEATURES

• 2.8 – 4.9 Twin Screw vs. little 2.3 TVS.
• +30HP standard MAMMOTH 4.5″ Inlet System.* No boost loss.
• Saves $800. Others retain boost robbing stock filter box with a K&N).
• Huge rear inlet design (1850 cfm) vs. smaller more restrictive front inlet (744 cfm).
• Short high flow – high rpm manifold runners vs. long power robbing runners.
• Accepts larger throttle body without machining manifold.
• No driveshaft in inlet manifold to restrict flow.
• Cooler exposed supercharger. They won’t mistake it for an intake manifold.
• Patented LC (Liquid Cooled) optional.
• Patented External Spring Bypass Valve.
• Patented Seal Pressure Equalizer (3.6 and up).
• More room to grow.

“Compared to some of the smaller blowers on the market, the Kenne Bell Twin screw 2.8L (Mammoth Kit) offers an impressive combination of efficiency and airflow, making it equally affective on both stock and modified motors”

“Big Bell Boost” Mopar Muscle Magazine

Hemi 2008-2010 Off-Road / Street Rod 5.7L, 6.1L Tuner Kits 

DYNOS

1. Standard Street Kits with pump gas.
2.  RWHP divided .85 =ENGINE HP measured on Dynojet.
3.  10 psi boost requires minimum 93 octane (see “Jim Bell’s Supercharged/Turbocharged performance Guide”).
4.  ATI 7.35” 6 rib crank pulley only. Allows 15 psi with a 6 rib system and 3” SC pullet and “0” slippage.
5.  Stock 81mm throttle body is 924 cfm. Kenne Bell Big 148mm is 1880 cfm.
6. Engine lived but forged internal engine recommended after 15 psi.
7. Nitto NTO5 Drag Radials are required with 100% stock suspension at these power levels.
8. Kenne Bell 2.8L Twin Screw can run a 6 rib system to 16 psi whereas others may require 8 ribs. Why? Because it’s lightweight low reciprocating weight components and ultra high efficiency uses less engine HP to drive.
9. Use 8” pulley with Mezierre Electric Water Pump (+20HP).

DODGE, CHRYSLER, HEMI TECH TIPS

This info is intended to help our customers make more intelligent decisions and avoid common mistakes. All dyno tests on Kenne Bell Dynojet. These are not estimates or heresay numbers “bloated” by headers, strokers etc. Note: Actual RWHP on other dynos will depend on many factors (see Dyno Test Variables and Air Fuel Ratio Readings – The Pitfalls & Problems).

1. 11.5 AFR and optimum spark (22°) was used so as to eliminate variables. 1° spark = 4 HP.

2. 93 octane allows boost to be increased 1 psi (+20HP) via a 1/8” smaller supercharger pulley (3-3/8” vs. 3-1/2”).

3. Manual trans cars make 15 more RWHP than the automatics at 500RWHP level. Manual trans makes most HP in 4th. Auto      trans 3rd gear.

4. To determine engine HP, divide RWHP by .85. Example: 520RWHP ÷ .85 = 611.

5. Kenne Bell Kits are factory tuned with OEM grade equipment. Custom tuning not necessary or recommended unless kit is     altered or modified.

6. NEVER have your car’s air fuel ratio checked with any device other than the AFM1000, HORIBA or ETAS. Other devices     can be off by 1-2 points. Sorry, we cannot accept data from any other AF devices.

7. Competition pulleys are available in 3-3/8” (9 psi), 3-1/4” (10 psi), 3-1/8” (11 psi) and 3” (12 psi). Standard is 3-1/2” (8 psi).     7.5” crank pulley with 3” is 15 psi.

8. 8 rib system available for higher boost (+15 psi) applications.

19. Recommended spark plugs – NGK+6510 (6.1, 6.4). Heat range “7” (5.7).

10. Recommended octane booster. See “Jim Bell’s Supercharged/Turbocharged Performance Guide.

11. Our dyno tests indicated “0” HP gain with cat backs. Even removing entire cat back was “0” HP. Dodge exhaust is very efficient.

12. Yea, yea, we know. The stock pistons are weak. But they DO hold 16+ psi for drag strip use IF YOU DON’T DETONATE        the engine. Forged pistons will also fail under detonation. As with any engine, JUST DON’T LET IT KNOCK! Know your        tuner if you play with boost.

13. Octane? “It never hurts to run more.”

FUEL SYSTEM – Kenne Bell 17.5V BOOST-A-PUMP™ and 60lb injectors included in all kits. Good for 650RWHP with stock pump. Use 21V BOOST-A-PUMP™ with 70-80lb injectors and stock pump for up to 765RWHP. ST Motorsports test car made 765RWHP (900 engine HP) @ 20 psi with 100% stock motor and car using 21V BOOST-A-PUMP™ and 80lb injectors. Still believe you need 2 pumps, bigger pumps and larger lines on your Dodge?

EXHAUST – The Magnaflow cat back came out on top in our dyno testing. Even our 7.0L 1200HP test car uses the Magnaflow with 2″ American Racing headers.

HEADERS – The highest quality and most powerful long tube headers we’ve tested are the American Racing 1 3/4″ and 2″. The 1 3/4 headers made 40HP on the engine dyno. Be sure you have an experienced and reputable tuner re-tune the car.

IGNITION – Stock works just fine to 20psi. Above 20psi, we recommend the Kenne Bell BOOST-A-SPARK.

TRANSMISSION – After 550HP, automatic trans needs the shifts firmed up with a valve body kit. HP begins to overpower the trans. At 950HP, it failed and was upgraded by Paramount Performance. It’s now working well at 1000HP.

TORQUE CONVERTER – Keep the lock up unless you choose to give up 50HP. We use only Precision Industries lock up converters with stock stall speed on the Dodges.

TECH SUPPORT- All our people are knowledgeable and experienced. They tell it like it is. There’s no B.S. And they’ll NEVER recommend something you don’t need.

BREATHERS – Valve cover breathers required at high HP levels to avoid gasket damage/leakage and oil flow by into inlet system.

DO NOT . . .

DO NOT use any underhood filter, shrouded or un-shrouded. Voids your KB warranty. Hot underhood air heats the air, reduces HP and increases detonation and the possibility of engine damage. Note: “Shrouds” allow hot air to be sucked in around the gaps. And the filter runs “hotter” under the hood. And never assume 100% outside air magically finds it’s way through the front end openings and into the filter.

DO NOT install covers or shrouds over supercharger.

DO NOT use a “tail pipe sniffer” AFR device under any circumstances.

DO NOT change rear end gear ratio.

DO NOT change, modify or replace any kit components including throttle body.

DO NOT re-tune kit – unless modifying the kit with larger injectors, throttle body, gears, headers, cams, etc. Kenne Bell offers NO custom tuning.

DO NOT change stock cam unless assured it can be re-tuned. Dodge’s Speed Density system relies on vacuum and rpm for engine operation. Cams LOWER vacuum. Your WORST nightmare. Cams are for all out racing only. Very difficult to calibrate for street use.