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Thread: OBS to LSx conversion

  1. #101
    Join Date
    Oct 2012
    Posts
    6
    What are the differences between a 96-98 4l60e's? Do they have the same plugs?

  2. #102
    Join Date
    Sep 2012
    Location
    Quakertown, Pa.
    Posts
    363
    Quote Originally Posted by ymaha05 View Post
    I have a question about hooking up a 4l60e to my 89 k1500 transfer case. Will I have any issues or will it bolt right up? Or would finding a 2000+ transfer case be a better idea and would my drive shaft still work it I have to swap Trans cases?
    From what I have been told by the Brendan Patton(the guy who flashed my PCM on LT1 swap) you will need a Vehicle Speed Sensor(VSS) from the tail shaft of the transfer case. I think 93 and up had them. If you don't, you will have to either buy a different T-case with the sensor, or buy an aftermarket speed sensor. The reason being is that the 4L60E is an electronic transmission and is shifted by the PCM. Without the pulses coming from the VSS, the PCM doesn't know when the vehicle is moving or stationary.
    When using an older trans that shifts by vacuum modulator, the VSS is un-necessary.

    As for bolting up, it may. You may be better suited to finding a Tcase from a 93 to 98. That will have the VSS and should bolt up to the 4L60E. Mine did and I'm running a 99 4L60E out of a Caddy Escalade originally powered by the traditional small block Chevy 350 with Vortec injection. I still retain the original T-case.
    Last edited by Mickeymotormount; 02-14-2013 at 04:17 PM.
    '93 Chevy 1500 4X4 ECLB with a '99 Silverado LQ4 6.0 and '99 Escalade 4L60E. SOLD IT!!

    New toy: 2001 2500 HD 4X4 Extended Cab Long Bed


    John

  3. #103
    Join Date
    Sep 2012
    Location
    Quakertown, Pa.
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    363
    Quote Originally Posted by okieraptor View Post
    What are the differences between a 96-98 4l60e's? Do they have the same plugs?
    I believe the plugs are the same. I can't see why the wiring wouldn't be the same but I would certainly check first to eliminate any potential problems.
    '93 Chevy 1500 4X4 ECLB with a '99 Silverado LQ4 6.0 and '99 Escalade 4L60E. SOLD IT!!

    New toy: 2001 2500 HD 4X4 Extended Cab Long Bed


    John

  4. #104
    Join Date
    Sep 2012
    Location
    Quakertown, Pa.
    Posts
    363
    Quote Originally Posted by Wagonbacker9 View Post
    What have people done for transmission cooler lines? I was thinking I could just use the factory ones but after looking, it sounds like that may not be an option. I have access to a donor truck so if the factory 99+ lines are usable I can try to grab them.

    I ended up removing my old adapters out of my trans and installed them into the 99 trans. The male threaded part are metric in both but the female part that receives the cooling line was different. In order to keep my original cooler lines, I simply swapped fittings out of my old trans and put them in the new one.
    '93 Chevy 1500 4X4 ECLB with a '99 Silverado LQ4 6.0 and '99 Escalade 4L60E. SOLD IT!!

    New toy: 2001 2500 HD 4X4 Extended Cab Long Bed


    John

  5. #105
    Join Date
    Sep 2012
    Location
    Quakertown, Pa.
    Posts
    363
    Quote Originally Posted by nosrex View Post
    I am putting a 5.3 into a 91 ext cab 2wd, now in order to keep the old drive shaft and new transmission in the proper location will i need 1" set back mount plates or standard mount plates?
    You will need 1" setback mounts for your trans to mount back into it's original location. Trust me, I know. I didn't order them, and when it came time to mount my tranny, it was an inch forward of where it should have been.
    '93 Chevy 1500 4X4 ECLB with a '99 Silverado LQ4 6.0 and '99 Escalade 4L60E. SOLD IT!!

    New toy: 2001 2500 HD 4X4 Extended Cab Long Bed


    John

  6. #106
    What about the oil cooler lines? Will they bolt to the 96-98 truck radiator? I haven't read or heard anyone say anything about these.

  7. #107
    i would think the line would work. i put an 02 F-body 4l60e in my 96 & i used my 96 lines, just had to bend them a little to fit. the angle they go into the trans is a little different.
    i know you're talking about a truck trans but if the f-body is the same i would think the newer truck is the same.
    my 96 also has 2 sets of holes. i actually used the forward set on one side & the rear set on the other & my trans lined up perfect in the center. if i would have used both rear holes it would fit but the trans mount stud was all the way against the front of the cross member.
    Last edited by RPM Graphics; 03-11-2013 at 10:41 PM.

  8. #108
    Quote Originally Posted by RPM Graphics View Post
    i would think the line would work. i put an 02 F-body 4l60e in my 96 & i used my 96 lines, just had to bend them a little to fit. the angle they go into the trans is a little different.
    i know you're talking about a truck trans but if the f-body is the same i would think the newer truck is the same.
    my 96 also has 2 sets of holes. i actually used the forward set on one side & the rear set on the other & my trans lined up perfect in the center. if i would have used both rear holes it would fit but the trans mount stud was all the way against the front of the cross member.
    You know,I didn't give enough info on that post. I was referring to the engine oil cooling lines. I want to adapt the 6.0 oil cooler lines to my 97 radiator. The 350 vortec I'm about to pull because it developed a knock came with the oil cooler.

  9. #109
    It's seams everyone is just buying the block off plate. But I would like to retain the oil cooler,but the block off plate is much cheaper that the 150.00 adapter plate that allows you to run the an fittings.

  10. #110
    Join Date
    Oct 2009
    Posts
    3
    Are there any longtube headers out there that will clear on a '96 4x4 rcsb?

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