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”

The ultimate power upgrade for the Ford Boss V8 just got even better — introducing our new Phase III 2.4L Twin-Screw Whipple Supercharger Kit.

At the heart of the new Phase III kit is Whipples cutting edge Gen4 Twin Screw Supercharger producing more power and torque per pound of boost than any other positive displacement blower on the market!

 

Building on the popular "absolute stealth" design, this latest version now features an advanced all-in-one manifold housing with an increased plenum area. It houses a massive 50% larger intercooler core

and improved runner system, providing unmatched airflow efficiency and significantly lower intake manifold temperatures, resulting in consistent, reliable power and torque across all boost levels.

Our heavy-duty 8Rib independent blower belt drive system is engineered to handle serious performance, designed to ensure maximum blower belt grip across the rev range and completely isolating the

supercharger load from the original factory 6-rib accessory belt system.

Proudly engineered in Australia to ISO 9001 standards, this complete kit is ADR compliant in all states, when combined with the correct tune calibration to meet each states regulatory requirements.

The Phase III Whipple Supercharger Kit remains the ultimate bolt-on upgrade — delivering jaw-dropping low-end torque, exhilarating horsepower, and everyday drivability,

while all fitting neatly under your factory intake lid and engine cover to retain the complete factory-look under the bonnet.

 

KEY FEATURES:

*Latest Gen#4 2.4L Twin-Screw Whipple Supercharger with built in billet air bypass system.

*Absolute “Stealth” inverted manifold design, allows use of your factory plenum lid , throttle, intake system and engine cover.   

*High efficient intercooler core with single pass design, large 40mm thick, triple pass alloy front heat exchanger, high volume water pump and billet reservoir.

*Billet Independent 8rib drive for supercharger, maximizing belt grip and relieving load off the other factory drive accessories.

*Alternator relocation bracket & HD loom, 2BAR MAP Sensor, all plug and play looms and full colour instructions included.

*Price excludes Injectors, install and tuning.

 

 

AVAILABLE  OPTIONS:

*Set of 8 – High Flow 610cc Siemen Injectors (Factory Ford EV1 Plugs) 

*High-Flow Plenum Lid (Black) to suit Factory Ford or Aftermarket Twin Blade Throttles

*Billet Black Twin 68mm Throttle Body fitted with calibrated electrics (Stepper motor & TPS) 

*Upper Billet Blower Pulleys (various sizes for higher boost levels) 

*Lower Billet Crank Pulley (201mm up from 180mm std in kit) – ADD ON: $440+gst

 

 

 *NOTICE TO WHIPPLE PURCHASERS*

Yella Terra is the ONLY Authorized Whipple Superchargers Distributor and Repairer here in Australia, and solely responsible for Approving, Appointing

and Managing Australian Dealers/Fitters for Whipple Industries and legal Registered owners of the Whipple Superchargers Trademark here in Australia.

YellaTerra are the only company outside of Whipple USA who are authorised to service, repair or give direct tech support on any of Whipple products!  

Any Whipple product imported into Australia not through YellaTerra will not be directly supported nor carry Whipple’s AUD Manufactures Warranty!

 

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