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Do I have to change my trans if I want to swap to a lightning motor.

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Do I have to change my trans if I want to swap to a lightning motor.

  #1  
Old 11-30-2018, 09:55 AM
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Do I have to change my trans if I want to swap to a lightning motor.

Stock 03 f150 stx wanna swap to a lightning motor do I have to change the trans and diff
 
  #2  
Old 11-30-2018, 11:32 AM
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What engine is in your STX?

Lightning came with 4R100 and 9.75" rear.
STX 4.2 came with 4R70W which will NOT work on a V8 and a 8.8" rear.
STX 4.6 came with a compatible 4R70W and 8.8" rear.
STX 5.4 came with a compatible 4R70W and 9.75" rear.

A 4R70 PCM cannot run a 4R100, and vice versa.
 
  #3  
Old 12-11-2018, 08:32 PM
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motor

its a 5.4
 
  #4  
Old 12-11-2018, 10:28 PM
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Trans and diff should be strong enough, but don't use a Lightning PCM, get tunes for yours.
 


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