Thats what I was hoping for, all the 4l60e I have seen have a 6 bolt pattern. Hopefully it will all be a bolt up affair. Thanks y'all!
CK5
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Finally... my 5.3 swap
- Thread starter MAX89K5
- Start date
Just make sure you get the adapter when you get the engine/tranny.
Martin
Martin
Will do. What are y'all swappers doing for a P/N switch? The one on the column or the one on the shift shaft of the 4l60e?
Oh and some more parts.
Dirty Dingo conversion mounts. I'm diggin the new, non-welded design.
Dirty Dingo conversion mounts. I'm diggin the new, non-welded design.
y5mgisi
1 ton status
Subscribed and will help as I can. I did a 5.3 swap in my 90 suburban.
y5mgisi
1 ton status
For Park neutral I did the one on the column, but I'm using a th400.as for the harness, remove everything coming off the computer for the tbi. There are like 4?wires that go from the computer under the dash. Those are the ones for the check engine light, Park neutral and something else? I have pics in my phone of everything jotted down.
I have found a lot of useful info in your build thread! Yea there is a connector/harness that goes under the dash where the ecm plugs in. I'll have to trace those, I'll take any info you have! Thanks
y5mgisi
1 ton status
See if you can read and make sense of any of this. It explains all of that. Really, this is the biggest issue in my mind of mating the two harnesses together.
y5mgisi
1 ton status
As soon as I have time I'll clarify some of that.
Please! Gimme the run down on 1-6, these are the wires for the harness that runs from the tbi ecm under dash correct?
y5mgisi
1 ton status
Correct. So basically, if i remember right...
1- just gets cut and capped.
2-daig term. Cut and cap.
3-park neutral from the park neutral switch. This was fed to the 34 pin on the blue connector.
4-is the speed sensor wire from the DRAC module to the computer. I just cut and capped it. The new computer uses the two wire setup.
5-Check engine light which gets fed from pin 46 on the red connector
6-downshift solenoid. Specific to th400.
So thats it. If i remember right, the there was one more black wire coming out of there that went to the computer. Turns out its a ground for the speedo. So i just grounded it and was good to go. Beyond that i just used the junktion blcok on the firewall for the main poer feed, original coil wire as my "ignition on" source, and ran the new fuel pump feed wire to the existing wire near the steering column.
1- just gets cut and capped.
2-daig term. Cut and cap.
3-park neutral from the park neutral switch. This was fed to the 34 pin on the blue connector.
4-is the speed sensor wire from the DRAC module to the computer. I just cut and capped it. The new computer uses the two wire setup.
5-Check engine light which gets fed from pin 46 on the red connector
6-downshift solenoid. Specific to th400.
So thats it. If i remember right, the there was one more black wire coming out of there that went to the computer. Turns out its a ground for the speedo. So i just grounded it and was good to go. Beyond that i just used the junktion blcok on the firewall for the main poer feed, original coil wire as my "ignition on" source, and ran the new fuel pump feed wire to the existing wire near the steering column.
Sweet, awesome info. So it looks like all I'll be concerned with is the check engine light wire. I'll be using the 4l60e P/N switch and an inline vss. Thanks!
y5mgisi
1 ton status
Make sure you do real good research on the vss! Not sure if its still the case but last i checked there was no inline VSS that would run the 4l60e!
y5mgisi
1 ton status
I just know i have seen lots of people go through lots of trouble to get a shaft mounted VSS because there was no inline one available.
I'll have to dig deeper but from what I've read the pcm wants 4000 pulse sinewave, the JTR sensor has that output. Thanks for the heads up [emoji6]
I was told that as long as you have a sine wave output the number of pulses isn't an issue. When you do the PCM setup you can adjust that setting.
y5mgisi
1 ton status
Well I sure hope it works so I can use one when I do the swap on my 78!
Subscribed
Great looking truck to start with. I have an '89 too and am in the process of gathering parts for a similar swap. Looking forward to see what all you have to do to get it done. Can't help on the VSS though, I'm using a 4l80e and a 32 spline 241 w/VSS from a '90 Burb in mine... Keep up the good work
Great looking truck to start with. I have an '89 too and am in the process of gathering parts for a similar swap. Looking forward to see what all you have to do to get it done. Can't help on the VSS though, I'm using a 4l80e and a 32 spline 241 w/VSS from a '90 Burb in mine... Keep up the good work
I spoke with Brendan Patten of lt1swap.com and he said the JTR 4PAC will not provide the appropriate output... I asked if he had a recommendation and I am awaiting a response.
Have you successfully used the dakota digital vss in conjunction with pcm programming?
