4L60E in place of my 700R in '70 pickup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

diggerbob · 05-17-2014, 04:29 PM

I am thinking about getting a new transmission built for my truck. Right now I have a 1984 vintage 700R. It is a used transmission so I am looking to get something a little updated. I was thinking about finding a core from a 87-92 and having it built but my buddy suggested that I let him build me a 4L60E instead. The idea is to use a TCM from a diesel equipped truck from 1991 to 1997 to run it. Any suggestions on an adapter to make my mechanical speedo work or will I need to swap out my speedo for an electric one?

05-17-2014, 04:29 PM	#1
diggerbob Registered User Join Date: Mar 2005 Location: Bartlett, TN (near Memphis) Posts: 202	4L60E in place of my 700R in '70 pickup I am thinking about getting a new transmission built for my truck. Right now I have a 1984 vintage 700R. It is a used transmission so I am looking to get something a little updated. I was thinking about finding a core from a 87-92 and having it built but my buddy suggested that I let him build me a 4L60E instead. The idea is to use a TCM from a diesel equipped truck from 1991 to 1997 to run it. Any suggestions on an adapter to make my mechanical speedo work or will I need to swap out my speedo for an electric one? Last edited by diggerbob; 05-18-2014 at 09:00 AM.

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