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Posted by Smoked50 (Member # 9592) on :
 
Quick question, I currently have a 4R70W tranny in my car. Would I need to change the ecu in order to run a 4R75W which came in the automatic Mach 1's?
 
Posted by 98 ROUSH (Member # 10309) on :
 
I know if you threw a 5 speed in it you do.
 
Posted by BTLD GT (Member # 5229) on :
 
check now [Wink]
 
Posted by VendicatedSN95 (Member # 10671) on :
 
Not from what I understand. they are pretty much the same trans different pistons, added the tss sensor etc.
 
Posted by notch_306_stang (Member # 7266) on :
 
You may need a new harness for it or wire up the second speed sensor it has
 




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