Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

Ls3 (e38) + 2006 4l60e?

Thread Tools
 
Search this Thread
 
Old Jun 4, 2019 | 10:22 AM
  #1  
TXjeepTJ's Avatar
Thread Starter
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (8)
 
Joined: Nov 2006
Posts: 1,151
Likes: 7
From: Houston
Default Ls3 (e38) + 2006 4l60e?

I'm taking over a project that a previous shop screwed up. 1970 Cutlass 442, with a 2012 6.2L LS3 (58x) and what appears to be a 2006 4L60E.

It came with a brand new wiring harness, made by an unknown person. The E38 PCM has "PSI CONVERSIONS" sticker on it, but I was told the wiring harness was not made by them.


I randomly googled to make sure the 4L60E would work w/ the E38, and I ran into a bunch of "will not work without ISS".

The only thing I am confused on is, this new wiring harness has the 4L60E pigtail with a label on it "4L60E".... so the harness was made w/ the E38 knowing it would use a 4L60E - I'm wondering if the harness I have will work, or if whoever made it just stuck on a 4L60E pigtail... Part number on the smaller TCM that it came with is 24235340

Thanks
Reply
Old Jun 4, 2019 | 11:19 AM
  #2  
LS1 TJ's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Sep 2008
Posts: 1,643
Likes: 526
Default

I have a 6.2 out 2012 Silverado and asked the same question to Preforma Built transmissions. The older like LS1 4L60e can be built to work with the 6.2. But it does have to be configured correctly. I was looking a complete new trans so they said no problem. If I recall correctly the big plug for the trans has a different number of pins depending on the application. You might give them a call to see if they can help.
Reply
Old Jun 4, 2019 | 02:01 PM
  #3  
TXjeepTJ's Avatar
Thread Starter
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (8)
 
Joined: Nov 2006
Posts: 1,151
Likes: 7
From: Houston
Default

I called PSI Conversions, asked the question - and they seemed to act like there isn't an issue at all as long as the pins on the transmission are 15 or 17 (won't work with 13 pin). Must be something they do in the tune?
Reply
Old Jun 4, 2019 | 03:52 PM
  #4  
LS1 TJ's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Sep 2008
Posts: 1,643
Likes: 526
Default

Per the guys at Performa Built there are some hard parts that must be installed in the trans. Please double check though because it's been a while since I spoke to them.
Reply
Old Jun 5, 2019 | 05:48 AM
  #5  
TomM's Avatar
TECH Resident
15 Year Member
Photogenic
Liked
Loved
iTrader: (57)
 
Joined: Feb 2009
Posts: 857
Likes: 31
From: Baytown, Texas
Default

Originally Posted by TXjeepTJ
I called PSI Conversions, asked the question - and they seemed to act like there isn't an issue at all as long as the pins on the transmission are 15 or 17 (won't work with 13 pin). Must be something they do in the tune?
Yes, it's something they do in the tune. They (PSI) uses a 2008 truck tune, last year of the 60E in a truck. You also have to turn off the ISS (input shaft sensor) in the tune, or it will cause your engine to pull timing and create havoc with your swap. I chased this **** for two years and nobody could tell me why it was doing this until we stumbled on it by accident.

In the trans diagnostic tab of HP Tuners, disable P0717-ISS low, and also P1870-trans components slipping and you should be good to go.

T,
Reply
Old Jun 6, 2019 | 07:44 AM
  #6  
TXjeepTJ's Avatar
Thread Starter
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (8)
 
Joined: Nov 2006
Posts: 1,151
Likes: 7
From: Houston
Default

Originally Posted by TomM
Yes, it's something they do in the tune. They (PSI) uses a 2008 truck tune, last year of the 60E in a truck. You also have to turn off the ISS (input shaft sensor) in the tune, or it will cause your engine to pull timing and create havoc with your swap. I chased this **** for two years and nobody could tell me why it was doing this until we stumbled on it by accident.

In the trans diagnostic tab of HP Tuners, disable P0717-ISS low, and also P1870-trans components slipping and you should be good to go.

T,
My man... Thanks big time!!
Reply
Old Jun 6, 2019 | 10:01 AM
  #7  
TomM's Avatar
TECH Resident
15 Year Member
Photogenic
Liked
Loved
iTrader: (57)
 
Joined: Feb 2009
Posts: 857
Likes: 31
From: Baytown, Texas
Default

Originally Posted by TXjeepTJ
My man... Thanks big time!!
No worries, anytime.

As a side note, the extra two wires in the 17 pin plug are for the ISS, or Turbine shaft sensor as some call it. The 80E's have this which is why it wrecks your **** on acceleration using the 60E.......

T,
Reply
Old Jun 12, 2019 | 09:59 AM
  #8  
TXjeepTJ's Avatar
Thread Starter
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (8)
 
Joined: Nov 2006
Posts: 1,151
Likes: 7
From: Houston
Default

Originally Posted by TomM
No worries, anytime.

As a side note, the extra two wires in the 17 pin plug are for the ISS, or Turbine shaft sensor as some call it. The 80E's have this which is why it wrecks your **** on acceleration using the 60E.......

T,
TomM, quick question - is a segment swap needed? Or do I just use the "Compare" feature in HPTuners and just copy over all transmission aspects from a 2008 5.3L Silverado tune?

Thanks again
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jun 12, 2019 | 05:16 PM
  #9  
TomM's Avatar
TECH Resident
15 Year Member
Photogenic
Liked
Loved
iTrader: (57)
 
Joined: Feb 2009
Posts: 857
Likes: 31
From: Baytown, Texas
Default

Check the tune file, it should list the transmission type. At top, click on edit, calibration details, then the controllers tab. Should list the trans controller as T42 and then A4 for 4L60E. Also, in tune overview, it shows the OS and year of vehicle. If it is 2008, should show A4. If they already did the segment swap, it will also show A4.

Also look under trans tab, shift general then gear ratio to right shows number of gears, or select normal under shift solenoid pattern and it will also show gears. There are several places to look to verify 4 speed auto.

T,
Reply




All times are GMT -5. The time now is 06:51 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE