Kenne Bell 4.2LC Liquid Cooled Mammoth Supercharger Kit (07-12 GT500 Mustang)

Kenne Bell 4.2LC Liquid Cooled Mammoth Supercharger Kit (07-12 GT500 Mustang)

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If your craving more power from your Shelby GT500, Evolution Performance, Inc. has the answer. Get the industries latest, most efficient twin-screw supercharger.
Our Price: $5,269.15 $6,199.00

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Kenne Bell


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This kit includes the Kenne Bell 4.2LC Twin Screw Supercharger, Mammoth Inlet Manifold, Dual 75mm Billet Throttle Body, 128mm Gimme 5" Cold Air Intake, Dual Boost-A-Pump and a Kenne Bell Tune

The supercharger comes in Polished or Black Polished Anodized Billet Case with Polished Inlet Manifold.

Kenne Bell 4.2LC "Mammoth" Twin Screw Supercharger
If your craving more power from your Shelby GT500, Evolution Performance, Inc. has the answer. Get the industries latest, most efficient twin-screw supercharger. The Kenne Bell 4.2LC "Mammoth"can produce incredible power levels with stock 5.4L/5.8L Shelby GT500 engines as well as highly modified engines. The revolutionary 2.0 PR compressors have the ability to run nearly 32psi of boost for unheralded performance. A 4 minute pulley change will allow you to step up or down for street or race applications.

This direct bolt-on replacement system gives you the ability to run far higher boost levels than the factory 2.1L roots-type supercharger while dramatically lowering supercharger discharge temperatures and power consumption (hp).

• Requires aftermarket hood to fit.
• Most flexible kit design. Easy to “step up” for racing or “dial down” for street with easy pulley change.
• Largest (Dual 75mm) Throttle Body / Manifold for most HP, lowest parasitic losses and coolest air charge.
• Standard “Mammoth” Dual 75mm Inlet Manifold accepts exclusive Kenne Bell Dual 75mm Throttle Body.
• A 4 minute 1/4” size pulley change is 20-36HP depending on kit.
• BIG BORE™ 4.2LC (2.0 PR). +56HP over 1.4 PR Twin Screws. Rated 1000HP.
• Exclusive Kenne Bell Dual BOOST-A-PUMP™ included with all kits.
• Quick easy install.

• 4.2LC is the Largest displacement Billet Twin Screw
• Highest HP potential.
• Liquid Cooled (Patent Pending). Cooler air charge. 60° cooler oil, gears, case, rotors, bearings and seal temps. Higher Boost and RPM Potential
• New design BIG BORE rotors (4.41” vs. competitions 4.11” and 4.17”).
• 6”x4” rotor lobes vs. 5”x3” competition. Reduces male rotor speed 10% (1.5 vs 1.66 ratio).
• Hard anodized rotors for corrosion and wear protection. No Teflon to flake or rub off and clog intercooler. 
• Huge boost / HP gains with same pulley ratio.
• Less rpm with same boost. Reduces friction, heat and wear.
• Cooler denser air charge temps.
• Lower parasitic loss.
• Larger pulleys - less slippage - more HP..
• Up to 33% greater belt contact patch.
• Billet construction. Stronger than cast.
• CNC machined billet inlet and outlet. 
• Sleek, lightweight, high rpm design. Fits under stock hoods.
• Oil cooling pods.


Dual 75mm Billet Throttle Body 
Any one undersized inlet component can starve the supercharger and engine for air (HP). Our testing clearly indicated that the stock 60mm throttle body and manifolds became a major restriction as low as 435HP (stock HP for a Shelby). With our lowest HP Stage 1Kit producing 606HP at a mere 13 psi and the Stage 3 Kit making up to 801HP, we had no choice but to develop our own Dual 75mm Throttle Body to match the HP potential of the BIG BORE™ 3.6LC Supercharger.

• Supplies whopping 66% more air to supercharger (1880 vs. 1128 stock 60mm).
• 48-68RWHP over restrictive stock 60mm
• Lowers discharge temp and parasitic loss.
• Matches opening of huge Dual 75mm Kenne Bell Inlet Manifold.
• Kenne Bell Exclusive Drive By Wire” Calibration & Tune
• Manifold and Dual 75mm Throttle Body is fed air via the matching Kenne Bell Gimme 5" Air Intake Kit.
• Polished billet aluminum.

Gimme 5" Cold Air Induction System
Our flow bench and dyno testing indicated the Kenne Bell 4.2LC was capable of inhaling a lot of air - up to 1200HP. So we designed a inlet system and Filter that measures 128mm and flows 2450 cfm. It feeds our own Dual 75mm Throttle Body and matching Inlet Manifold through an equally oversize Inlet Tube. 

• Engineered as a matched pair (internally contoured to meter).
• 2450 cfm @ 28”. 1625 cfm meter only.
• Eliminates restrictive stock canister / filter / meter assembly (2450 cfm vs. 940 cfm stock)
• Developed on 2000HP Flow Bench and Dynojet.
• Inlcudes air filter and heat shield

Shelby GT500 Dual Boost-A-Pump
A time tested and proven innovation, the Dual BOOST-A-PUMP™, powers some of the world’s most powerful production street and competition vehicles. The 1000HP Shelby Super Snake (”Most Powerful Production Car Ever”)

•1000HP with OEM in tank production pumps.
•Increases fuel pump flow up to 50%
•Easily installed. Uses stock feed wire & fuel lines.
•Eliminates expensive fuel lines and pump upgrades.
•Exclusive built in regulator stabilizes voltage regardless of battery voltage (down to 11V).
•Compensates for reduced voltage/pump delivery from voltage drops by lights and accessories.
•Proven reliability and concept. Tens of thousands sold since 1995.
•Does not affect pump life. Actually increases life of returnless pumps.
•Fused circuit protection.
•Easily installed.

NGK TR6 Spark Plugs (8)
Replace your stock plugs with these NGK TR6 Plugs, their one step colder than stock. Must be used with Shelby GT500's running more than stock boost and must be gapped at .028!

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