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1993 Chevrolet Silverado Tranny swap

Tiny
MANZOLARRY24
  • MEMBER
  • 1993 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 147,000 MILES
I want to swap out the 700R4 to a 4L80E WHAT WILL BE NEEDED TO MAKE THE SWAP, AND WHERE CAN I GET THE WIRING DIAGRAMS OF THE PLUGS ON THE TRANNYS THEMSELVES IVE GOT THE WIRING FOR THE 4L80e AND CAN GET THE ECM FROM THE SUBURBAN I GOT IT OUT OF IF NEED BE BUT IT HAD A 454 in it
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Tuesday, April 28th, 2015 AT 5:42 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
We only recommend direct fit parts. Too many problems occur when changes are made.
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Wednesday, April 29th, 2015 AT 7:06 PM
Tiny
MANZOLARRY24
  • MEMBER
  • 28 POSTS
Where can I find out what the differences are between the 700r4 and the 4l80e TRANNYS electrical plugs and what operates them, I've got everything out of the suburban to put the tranny in with complete wiring harness so the rest should be just a normal tranny swap shouldn't it?
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Sunday, May 3rd, 2015 AT 5:31 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
I would like to say yes, but there has to be differences. Are the plugs and everything the same as the original trans?
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Sunday, May 3rd, 2015 AT 7:21 PM
Tiny
MANZOLARRY24
  • MEMBER
  • 28 POSTS
I have all of the wiring harness and the computer, DRAC to go with it. The only difference is it came off of a 454 and it's going on a 350
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Monday, May 4th, 2015 AT 4:55 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
The only thing I can say is give it a try.
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Wednesday, May 6th, 2015 AT 6:52 PM

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