FORD V8 BOSS BA-BF 5.4L INTERCOOLED 2400 PHASE III WHIPPLE KIT

 

NEW PHASE III 'STEALTH' 2400 WHIPPLE SUPERCHARGER KIT 

BLOWN POWER WHILE KEEPING YOUR GENUINE LOOK UNDER THE BONNET!

SUIT: BOSS 5.4L MODULAR ENGINES FOR BA-BF MODEL FORDS

NEW PHASE III YT WHIPPLE SUPERCHARGER KIT “ABSOLUTE STEALTH”

Latest and greatest power upgrade for the Ford Boss V8 has just got better, with the introduction of the NEW Phase III version of the 2.4L Twin-Screw Whipple supercharger kit.  The Yella Terra Phase III Supercharger Kit combines stealth OEM fitment with serious performance gains. Featuring the latest Whipple 2.4L Twin Screw compressor, a purpose-built all-in-one cast manifold, and a host of airflow and cooling upgrades, this kit delivers maximum horsepower and Torque with minimal fuss. Perfect for performance builds that demand reliability, power, and future-proof flexibility.

 

NEW PHASE III FEATURES:

Whipple 2.4L Twin Screw Supercharger (Latest Generation)

• This next-gen Whipple unit delivers immediate boost response thanks to its twin-screw design, producing incredible torque off idle and sustained horsepower throughout the rev range. Proven performance gains for both street and track applications, with improved efficiency and reliability.

All-in-One Cast Aluminium Manifold

• Unlike modular manifolds with multiple sealing surfaces, this single-piece cast design eliminates thermal hotspots and leak points. It keeps intake temps down, reduces assembly complexity, and provides robust, long-term reliability under high-boost conditions.

50% Larger Single-Pass Internal Intercooler Core

• Significantly increases internal cooling capacity. Cooler intake air means denser oxygen, resulting in more efficient combustion, more power, and reduced risk of detonation — especially important under sustained high-load or high-ambient conditions.

20% Larger CNC-Ported Intake Runners

• Precision-machined for consistent airflow, these oversized runners reduce restriction and improve charge air velocity. The result is a noticeable improvement in low-end torque and midrange grunt — great for both street drivability and launch performance.

OEM Stealth Design- Original Plenum is used

• Retains your factory engine bay aesthetics by fitting neatly under the stock throttle lid and engine covers. No cutting, grinding, or obvious modifications — ideal for owners who want big performance without drawing attention or voiding warranty-related appearances.

Independent 8-Rib Drive System (Standard)

• Purpose-built to handle high boost without belt slip. This drive system operates independently from your factory accessory belt, which means you don’t need to modify the alternator, A/C, or power steering systems. More grip, less wear, and easier maintenance.

 Triple-Pass, 40mm Thick Alloy Front Radiator Core

• Specifically engineered for forced induction systems, this high-efficiency intercooler radiator maximizes cooling with a triple-pass flow path. Helps maintain stable intake air temperatures during prolonged pulls, summer heat, or track-day conditions.

 Uses Standard Factory Fuel Rails & Throttle Body

• Keeps your build cost-effective by retaining factory components for initial installation. Ideal for entry-level performance upgrades while leaving room to scale up later with larger Yella Terra plenum lids and big-bore throttles.

 Billet Alternator Relocation Bracket (Included)

• Designed for clean engine bay integration, this bracket repositions the alternator for optimal clearance and belt alignment with the independent 8-rib system. No guesswork, no custom fabrication.

 Easily Upgradable Pulley System (Top & Bottom)

• Both the blower pulley (top) and crank pulley (bottom) are designed for quick and easy swaps. This gives you the flexibility to increase or reduce boost pressure without needing major teardown or retuning every time.

 Full-Colour Step-by-Step Fitting Instructions

• Professionally illustrated and clearly written, these instructions take the guesswork out of installation. Whether you're an experienced builder or a qualified technician, you’ll save time and reduce install risk.

 Big Power Ready

• This system grows with you. Start with your existing OEM lid and throttle setup, and as your goals increase, upgrade to larger airflow components with minimal additional investment.

 

KIT FAQS: 

 

What Rwkw do you see on a stock XR8, BF Ford GTP?

Depending on the age of engine and setup with factory Plenum, you should see over 50-60% power gains in power and torque depending on build,

 

Does the YT Larger Plenum and throttle body fit this kit and what's the benefits

Yes they do. When purchased separately they allows more air volume to improve the superchargers performance and efficiency -( more air more power)

 

Does the kit work with a Ford shaker

Yes it does and our design allows all model shakers to be compatible

 

Are there any modifications required

No modifications No cutting No grinding – fits under factory engine cover  

 

What Rwkw do you see on a Built Ford Boss Engine ?

Potentially over 420 rwkw ( on Pump gas) and over 470rwkw (E85)

 

Do I have to upgrade the Fuel Pump

Yes  its recommended -with bigger injectors it recommended a Higher volume drop in pump is used (Walbro 500 series).

 

What Fuel do we use on the kits?

Min 98 Octane will be required

 

What Boost does it produce as standard?

Boost pulley supplied allows between 7-10 psi depending on other engine modifications  

 

What boost Options do I have?

We have a range of smaller diameter bolt on pulleys that are available giving you higher or lower boost levels   

Independent drive system for easy bolt on bolt off pulley change

 

How do I tune it and what system do I use?

The kits can be tuned with Simple factory ECU Recalibration-eg SCT and HP Tuners

They are also compatible with Haltech or Motec System for more advanced tuning options.

 

 

KIT OPTIONS AND UPGRADES:

 

  Part Number: SC 1582D-8 / SC 1577D-8  / SC 1574D-8 / SC 1571D-8 / SC 1567D-8 /  SC 1564D-8

  Blower drive pulley upgrades: 82mm, 77mm, 74mm, 71mm, 67mm and 64mm

 

  Part Number: SC 15200-8

  Upgrade crank pulley: 200mm

 

 

  Part Number: YT 5400LIDBK

  Hi-Flow Planum Lid to suit twin throttle bodies in Black

   

  Part Number: YT 5400TBWT

  Whipple billet black twin 75mm blade throttle body

 

 

  Part Number: YT 5400TBW

  Whipple billet black 1900cfm mono blade throttle body