Transmission swap

Tiny
KENNETH0079
  • MEMBER
  • 1990 GMC TRUCK
  • 0.5L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Will the transmission out of 1997 GMC work in a 1990 model Z71?
Wednesday, June 5th, 2019 AT 10:18 PM

1 Reply

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Sorry that swap will not work. The 1997 is a 4L60E transmission and the 1990 is a 700R4. They are electronically controlled and shift two completely different ways. The 4L60E is completely electronic and the 700R4 is basic electronic using more line pressure/hydraulic control. Hope this helps and thanks for using 2CarPros.
Danny-
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Thursday, June 6th, 2019 AT 1:05 AM

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