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

Newbie looking for e78 info

Thread Tools
 
Search this Thread
 
Old Jan 4, 2022 | 11:48 AM
  #1  
ironcurtain's Avatar
Thread Starter
Teching In
 
Joined: Jan 2022
Posts: 14
Likes: 1
From: Upstate NY
Default Newbie looking for e78 info

Hey! Looking for any info from someone who has LS swapped using an e78 ecm.

I'm putting a l96 with a 6L90e into a volvo wagon. I've got a complete 2011 2500HD to pull whatever I need. I've started on marking all the wiring on the engine harness connection to the fuse box from the GM upfitter site, but I can't find the pinout to the 24 pin connector for the DBW and ODB2 connections.

Any help with building a standalone harness or experience swapping using the e78 is appreciated!
Reply
Old Mar 30, 2022 | 02:06 AM
  #2  
Jobobcat's Avatar
Staging Lane
 
Joined: Sep 2018
Posts: 70
Likes: 0
Default

Originally Posted by ironcurtain
Hey! Looking for any info from someone who has LS swapped using an e78 ecm.

I'm putting a l96 with a 6L90e into a volvo wagon. I've got a complete 2011 2500HD to pull whatever I need. I've started on marking all the wiring on the engine harness connection to the fuse box from the GM upfitter site, but I can't find the pinout to the 24 pin connector for the DBW and ODB2 connections.

Any help with building a standalone harness or experience swapping using the e78 is appreciated!
have any luck with it?
Reply
Old Mar 30, 2022 | 07:18 AM
  #3  
ironcurtain's Avatar
Thread Starter
Teching In
 
Joined: Jan 2022
Posts: 14
Likes: 1
From: Upstate NY
Default

Yep! Still working out minor issues, but overall it was successful. You'll most likely need to get a fan controller. The programming for the fans didn't work out through HP tuners.
Reply
Old Mar 30, 2022 | 07:56 AM
  #4  
ironcurtain's Avatar
Thread Starter
Teching In
 
Joined: Jan 2022
Posts: 14
Likes: 1
From: Upstate NY
Default

What year and vehicle is the motor coming out of? The hardest part was identifying the main connector pinout and building the standalone harness / relay / fuse box. I had to use a 2012 schematic even though mine is a 2011.
Reply
Old Mar 30, 2022 | 07:59 AM
  #5  
ironcurtain's Avatar
Thread Starter
Teching In
 
Joined: Jan 2022
Posts: 14
Likes: 1
From: Upstate NY
Default

Reply
Old Mar 30, 2022 | 08:22 AM
  #6  
Biebs's Avatar
Launching!
 
Joined: Aug 2020
Posts: 205
Likes: 70
From: Phoenix AZ
Default

Nice Job!!! Looks like it belongs there!!!

Does the Alternator clear the stock hood???
Reply
Old Mar 30, 2022 | 08:34 AM
  #7  
minytrker's Avatar
9 Second Club
20 Year Member
Photogenic
iTrader: (13)
 
Joined: Sep 2004
Posts: 1,979
Likes: 273
From: Brenham
Default

I have never seen E78 fan control to work, we usually swap them to E38.
Reply
Old Mar 30, 2022 | 11:04 AM
  #8  
ironcurtain's Avatar
Thread Starter
Teching In
 
Joined: Jan 2022
Posts: 14
Likes: 1
From: Upstate NY
Default

I had to trim the hood reinforcement a bit to get it in there. It needed trimming at the throttle a bit also. I'm running the truck intake and a large alternator. Going to the car intake and a smaller alternator would probably make it fit without trimming.

The fan control was no big deal. Spent $30 on a temp switch and housing and ran it back to a set of relays. Holds temp well so far.

I'm running the 6l90e trans, and sts machining engine mounts. Pretty tight fit but it works. Holley oil pan and summit ls swap manifolds.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Mar 30, 2022 | 12:12 PM
  #9  
aknovaman's Avatar
TECH Addict
15 Year Member
Liked
iTrader: (7)
 
Joined: Apr 2007
Posts: 2,012
Likes: 111
From: Hog Back, KS
Default

Got any transmission to tunnel pics?
Reply
Old Mar 30, 2022 | 12:23 PM
  #10  
ironcurtain's Avatar
Thread Starter
Teching In
 
Joined: Jan 2022
Posts: 14
Likes: 1
From: Upstate NY
Default


Reply
Old Mar 30, 2022 | 12:34 PM
  #11  
ironcurtain's Avatar
Thread Starter
Teching In
 
Joined: Jan 2022
Posts: 14
Likes: 1
From: Upstate NY
Default

The tunnel at the firewall didn't need really any adjustment. Most of the "massaging" took place further back. I'm running a "chevro-volvo" 2 piece driveshaft I built on my lathe and tig welded together. It's super tight and required some shimming after the install. The 6l90 yoke is huge compared to the volvo shaft. I'm going to run this setup until I get to the ford 8.8 rear conversion at some point. The dana 30 is holding in the there for now. I tried to get the engine as close to a 3 degree pitch as possible. The trans mount is flipped over, uses the stock 6L90e mount, and has an access hole to reach the nut. The car has the 30mm lowered performance springs on it. Handles better, but I probably wouldn't go that way again because of the roads in my area. Probably could use an adjustable panhard rod and trailing arms to get it perfect. But it's not bad as is.
Reply
Old Nov 5, 2022 | 02:18 PM
  #12  
laberge's Avatar
Teching In
 
Joined: Apr 2016
Posts: 1
Likes: 0
Default

Originally Posted by ironcurtain
Yep! Still working out minor issues, but overall it was successful. You'll most likely need to get a fan controller. The programming for the fans didn't work out through HP tuners.

Can you let me know if there was any issues removing VATS?

Did you do it with HP Tuners?

I'm at this point. The wiring harness is almost ready, LT1Swap helped there big time so now I'm just thinking about that. I have the exact same engine + trans but going into a gbody.
Reply




All times are GMT -5. The time now is 03:25 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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