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Chapter Director Coordinator
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4r70w out of what?
 

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The Mark came with a 4R70W but you need to know what year the replacement tranny is. You may need to do some re-wiring and/or sensor swapping.
 

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Chapter Director Coordinator
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torque converter clutch solenoid

allows trans fluid to flow to the clutch. it is inside the trans
 

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You'll need the markVIII converter as well, the bird trans has a large pattern. I highly suggest not using the original converter over.
Alan
 
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