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super charged 5.4??

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Old Jan 8, 2019 | 02:31 PM
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super charged 5.4??

lookin to see how much trouble it is to put a supercharger in 2003 f250 with a 5.4. thanks
 
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Old Jan 9, 2019 | 07:45 AM
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They used to make a kit for it but it was discontinued. Other option is swapping in a Lightning motor. However this has been somewhat frowned upon if you plan to use the truck for towing as the Lighing's motor is setup for street performance and not towing.

User @qcksnake built a twin turbo setup for his V10 Excursion that put some serious power down. Take a look here and maybe talk to him. I think he has a shop.
https://www.ford-trucks.com/forums/1...ld-begins.html
 
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Old Jan 9, 2019 | 07:59 AM
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Originally Posted by wizkid00104
They used to make a kit for it but it was discontinued. Other option is swapping in a Lightning motor. However this has been somewhat frowned upon if you plan to use the truck for towing as the Lighing's motor is setup for street performance and not towing.

User @qcksnake built a twin turbo setup for his V10 Excursion that put some serious power down. Take a look here and maybe talk to him. I think he has a shop.
https://www.ford-trucks.com/forums/1...ld-begins.html
I don't understand how the Lightning/Harley motors are discouraged for swaps. It's the same motor with different pistons and big bloody roots charger on the top. Roots chargers were specifically invented for diesel trucks pulling heavy loads. I would think the biggest issue with the SC'd 5.4 would be detonating the transmission behind it.
 
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Old Jan 9, 2019 | 12:19 PM
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Originally Posted by FractureCritical
I don't understand how the Lightning/Harley motors are discouraged for swaps. It's the same motor with different pistons and big bloody roots charger on the top. Roots chargers were specifically invented for diesel trucks pulling heavy loads. I would think the biggest issue with the SC'd 5.4 would be detonating the transmission behind it.
The Lightning configuration was not set up for pulling a heavy load.
 
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Old Jan 9, 2019 | 12:31 PM
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Originally Posted by redford
The Lightning configuration was not set up for pulling a heavy load.
its the same engine with the same cams and a lowered compression ratio. What is different in the set up that precludes heavy hauling?
 
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Old Jan 9, 2019 | 01:11 PM
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Originally Posted by FractureCritical
its the same engine with the same cams and a lowered compression ratio. What is different in the set up that precludes heavy hauling?
The engine in the Lightning was optimized for peak performance, not low end torque.

It would work, but not well.

For example, a regular cab 2WD 2004 F-150 with a 3.73 dif is rated to tow 8400 or 9800 pounds, depending on wheelbase. The same year Lightning, also with 3.73 gearing, is rated to tow 5000 pounds.
 
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Old Jan 9, 2019 | 01:33 PM
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Originally Posted by redford
The engine in the Lightning was optimized for peak performance, not low end torque.

It would work, but not well.

For example, a regular cab 2WD 2004 F-150 with a 3.73 dif is rated to tow 8400 or 9800 pounds, depending on wheelbase. The same year Lightning, also with 3.73 gearing, is rated to tow 5000 pounds.
that’s a different truck with a different frame, different suspension, and different axle. The tow capacities are completely not relatable by just looking at the engine.
 
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Old Jan 9, 2019 | 02:14 PM
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Originally Posted by FractureCritical
that’s a different truck with a different frame, different suspension, and different axle. The tow capacities are completely not relatable by just looking at the engine.
No, a Lightning isn't a different truck. It has suspension designed for handling and an engine that is designed for peak acceleration, but it was still an F-150 2WD short bed regular cab pickup. No special frame, axles or anything like that. Suspension was still coil spring A-arm IFS and live rear axle hung on leaf springs.
 
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