The perfect technological match  – Kenne Bell and the fabulous Ford 5.4 4V. Never have there been kits with so much HP potential and flexibility in choice and never has there been a Ford engine like the 5.4 4V. The Shelby 5.4 engineered cars are strong and durable because they were designed specifically for a supercharger. Best of all, the 5.4 4V has tremendous HP potential, given the Kenne Bell supercharger and inlet component upgrades.

WHY MORE HP WITH THE SAME BOOST/PULLEY?

We’ve published a lot of information on the Shelby, but the following HP examples will explain why we talk so much about inlet systems. If we’ve learned one thing Since 1991, it is KEEP INLET SYSTEM LOSSES TO A MINIMUM. Supercharger size, efficiency and even boost are secondary if the inlet system is undersized and cannot supply sufficient air flow to the supercharger. It acts as a restrictor plate. Like a 2bbl carburetor on a 500” engine. The supercharger must spin faster to make up for the inlet boost loss. It then uses MORE engine HP to make the same boost. Oops! Remember that inlet restrictions LOWER the atmospheric pressure into the supercharger – and the actual boost the engine therefore sees. It’s a lose-lose situation. This is why the Kenne Bell 168mm manifold, throttle body etc. are so important to the HP a supercharger develops. See FAQ’s Supercharger boost vs. inlet loss.

DO I NEED UPGRADES?

Our kits were designed to leave no one hanging and wishing they could step up the power with some quick simple supercharger bolt ons. Note that any one poor flowing component can limit the flow of the other inlet parts anywhere in the chain. The mammoth sized Kenne Bell Dual 75mm “Mammothfold” flows more air than even the big 75mm throttle body. It blows away the competition. The engine makes more power because the supercharger uses less engine HP with a cooler air discharge temp.

EXCLUSIVE FEATURES

• Largest displacement 3L and 4L billet Twin Screws.
• 4×6 lobe rotors vs. 3×5 and 4×4 for competition
• Patented Liquid Cooled for cooler air charge / oil temps, higher RPM, boost and HP.
• Patented Spring Bypass
• Patented SPE (Seal Pressure Equalizer) for longer seal life. Also protects bearings from alcohol injection.
• Highest cfm inlet (Gimme 5). 2073 cfm vs 1850 (best competition)
• Largest/highest cfm Shelby throttle bodies available
• Largest Inlet Manifolds (168MM X 79MM vs 148MM x 66MM)
• Lowest PC (engine HP required to drive supercharger)
• All billet construction for durability
• Industry leading 2000HP rated Hi Density Intercooler (optional)
• Liquid Cooled 3.2 fits under stock hood*. No new hood or “Body Lift-Engine Lowering Kit” required.
• Most flexible kit design. Easy to “step up” for racing or “dial down” for street with easy pulley change or Kenne Bell   bolt ons.
• Largest 168mm Manifold for most HP, lowest parasitic losses and coolest air charge.
• Standard “Mammoth” 168mm Inlet Manifold accepts exclusive Kenne Bell Dual 75mm Throttle Bodies.
• Kenne Bell designed Dual 75mm Throttle Body (+26-74HP low restriction meter/filter (48-63HP). Eliminates “mixing   and matching” parts from others.
• Billet anodized or polished case vs. painted cast aluminum.
• Largest selection (2.8, 3.2, 3.6, 4.2, 4.7, 4.9)
• Kenne Bell Flash Tuner included with most kits.
• Exclusive Kenne Bell Dual BOOST-A-PUMP™ included with most kits. Larger pumps, fuel rails, lines etc. not required up   to   1000HP.
• Smog Legal. EGR etc. not removed.
• Tested by Muscle Mustangs & Fast Fords and 5.0 Mustang Magazine.
• Quick easy install.
• Complete kit. No cobbling together a grab bag of parts and then paying a tuner to make it all work.

The Boost-A-Pump and/or the Flash Tune can be deleted from your order at time of your order review call with our Sales Specialist.

*See the More Info tab above for additional information.

STOCK EATON 122 SHELBY vs. KENNE BELL 3.2LC REAR WHEEL HORSEPOWER & TORQUE

STOCK VS. KB DUAL 75MM THROTTLE BODY

The secret to the Kenne Bell kit’s superior performance is the exclusive mammoth sized 168mm x 79mm Inlet Manifold, Inlet system and matching Dual 75mm or 168mm Throttle Body. No other kit has it. Supercharger size and efficiency are meaningless if even ONE inlet system component is restrictive or undersized. That’s the best way to kill HP and efficiency (boost, temp and parasitic loss) with ANY positive displacement supercharger i.e. makes it work harder. So, at what HP level does the little stock 60mm throttle body begin starving a supercharged Shelby and killing off HP? One look at our back to back – one change at a time Kenne Bell Shelby dyno tests tells us the answer is approx. 435HP, the average for a STOCK Shelby. So don’t buy a larger throttle body for any Shelby supercharger that only makes 435RWHP @ 6200. At a mere 435HP, the 60mm begins to show it’s limitations. Then at 6300 rpm, the 75mm pulls away by 26HP (658 vs. 632)! And in the 700HP range, the highly restrictive stock 60mm is choking the supercharger off even more by up to 74HP.

Note the higher the HP/air flow, the greater the power gains from larger inlet components. Again, ANY positive displacement supercharger responds especially well to a SERIES of larger inlet components (throttle body, hose, meter, filter). If ONE is restrictive, it chokes off the air flow to ALL of the others, including the supercharger. Anyone who doubts that Kenne Bell 75mm components are a must need only ask Ford engineers why they used a 70mm on the Ford GT Supercar – an engine that makes up to 100HP LESS than a Kenne Bell Shelby.

The Kenne Bell 2.8 upgrade was introduced in 2007. Today, Shelby owners continue to demand more HP from their engines via superchargers, bolt ons, built forged engines and higher octane pump E85. All of the above require a larger supercharger. Our new 3.2LC was engineered specifically for these applications.

The popular 3.6 has been the #1 choice for the street Shelby for years. Shelby chose the 3.6LC for their Super Snake 850HP and 1000HP cars with their own hood, as the dimensionally larger 3.6 doesn’t fit under the stock hood.

The new 3.2LC is the only 3L that fits under the stock hood. It is the exact external dimensions as the 2.8 but with even larger diameter BIG BORE rotors. The larger re-profiled rotors pump an additional 3 psi (60HP) while using up to 40 less engine HP (lower PC) to drive the supercharger. And because of the lower RPM, higher efficiency and Patented Liquid Cooling (ordered on 95% of all Shelby Kits), the 3.2LC makes for the ideal Shelby street-strip kit.

• Only 3L to fit under stock hood.
• Rated 1200HP (1060RWHP)
• Larger displacement (40% greater than little stock 2.3 and 72% over a 2.1).
• Cooler air charge temps.
• Lower supercharger RPM at same boost.
• +3 psi (60HP. 2.8 with same pulley.
• Liquid Cooled standard.
• Up to 40HP less PC.