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#1 |
Truck Nut
![]() Join Date: Jun 2007
Location: Wills Point, Texas
Posts: 407
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700R4 or 4L60E
I have a 1991 , 1/2 ton, 2wd, suburban, with a 350. What transmission is in this thing? Need to know what it is before I sell it. Its all stock. I should know this
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Tony Kee Texas Square Bodies |
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#2 |
Registered User
Join Date: Jun 2008
Location: Lubbock, TX
Posts: 2,047
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Re: 700R4 or 4L60E
It'll be a 700R4, 93 was the first year for 4L60E IIRC.
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#3 |
Truck Nut
![]() Join Date: Jun 2007
Location: Wills Point, Texas
Posts: 407
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Re: 700R4 or 4L60E
But I don't have a speedo cable??? What makes it a 700r4 and not a 4l60E ? Is my 700r4 different than other years?? IIRC??? what does than mean??
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Tony Kee Texas Square Bodies |
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#4 |
Registered User
Join Date: Jun 2008
Location: Lubbock, TX
Posts: 2,047
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Re: 700R4 or 4L60E
The 93 and 94 (I think) are swappable, the '95 is similar but in '96, things changed. I could do a bit of research to double check, but that's not the issue you're asking about.
If you have only the 4-wire plug on the driver's side, it's a 700. If it has the big round plug, it's a 60. The 700 could use either a plastic gear drive or magnetic pickup on the tailshaft so it would work with a mechanical or electronic speedo. Yours should have the latter, can't tell without disassembling except that yours should use wire versus a cable. I picked up a '91 2wd with no engine or tranny, I'm going to convert it to 4WD and make a camping/ski rig out of it for my kids. |
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#5 |
Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: 700R4 or 4L60E
4L60E is electronically controlled valve body. If you have a TV cable, it is a 700R4 (4L60).
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1974 Jimmy- 5.3/4L80e/NP241 |
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#6 |
Registered User
Join Date: Oct 2010
Location: Largo Florida
Posts: 632
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Re: 700R4 or 4L60E
There are actually 3 different versions of the 700 R4 transmission. 1982 to 1990 (approx) they get the 700 R4, then in 1991 they are the 4L60 (notice no E) which is just another name for the 700 R4. After 1994 they became the 4L60E and later the 4L65E (a better 4L60E). The easiest way to ID the E version is to look at the transmission case by the shifter arm on the left side, there will be a very large wiring plug (earlier used the 4 wire plug).
A 1991 should be a 4L60 and may not have a speedo cable. After 1988 the new GM800 trucks got an electronic speedo the the need for a cable was gone. Where the speedo cable goes is a wire connection, that can be removed and a later cable connection can be installed (use one from the early 700 R4).
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Lifes journey is not to arrive at the gate well preserved, it is to slide in sideways all used up and wore out yelling.....God what'a ride! Where patience fails, force prevails Stapp's Ironical Paradox "The universal aptitude for ineptitude makes any human accomplishment an incredible miracle." |
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#7 |
Truck Nut
![]() Join Date: Jun 2007
Location: Wills Point, Texas
Posts: 407
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Re: 700R4 or 4L60E
Thanks again guys for the schooling on the 700R4. I can always get good advice here.
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Tony Kee Texas Square Bodies |
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#8 |
Registered User
Join Date: Oct 2011
Location: Michigan City, Indiana
Posts: 158
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Re: 700R4 or 4L60E
correct, the 4L60E is electronically controlled valve body, its pretty much the same as the 700r4. the 4l60e replace the 700r4 in 1990 with the electronic valve body.
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