LS2 Intake Swap... and keeping DoD
Thread Starter
Joined: Feb 2010
Posts: 906
Likes: 363
From: Champaign, IL
I plan to wail on this engine once installed and it might see some NO2 at some point, so I went ahead and installed the 4 corner vent setup from a 6.0L truck just to ensure cylinders 7&8 have the best chance for equal cooling.
It took some slight bending of the lines to route them around all the raised bosses and oil passages and I bent the exit tube to be vertical so it clears the intake. 2 bolt bosses for the DoD stuff under the cover needed cut down, but not far enough to touch the bolts. Some RTV should seal them back up. The bottom corner of the LS2 intake (the triangle part that rests between the heads and the valled cover) needed about 1/2" trimmed from it at the corner to clear the tube in the upper right hand corner of the picture. But now it fits!
It took some slight bending of the lines to route them around all the raised bosses and oil passages and I bent the exit tube to be vertical so it clears the intake. 2 bolt bosses for the DoD stuff under the cover needed cut down, but not far enough to touch the bolts. Some RTV should seal them back up. The bottom corner of the LS2 intake (the triangle part that rests between the heads and the valled cover) needed about 1/2" trimmed from it at the corner to clear the tube in the upper right hand corner of the picture. But now it fits!
FYI, a great thread by fieroguru with lots of LS4 upgrade information along with a summary of his build to date: http://www.fiero.nl/forum/Forum2/HTML/113207.html
Thread Starter
Joined: Feb 2010
Posts: 906
Likes: 363
From: Champaign, IL
FYI, a great thread by fieroguru with lots of LS4 upgrade information along with a summary of his build to date: http://www.fiero.nl/forum/Forum2/HTML/113207.html
I have several days off from now till Jan 2nd, so I hope to have all the mounts/accesory drive done and be working on the exhaust before 2011 rolls around.
Then it will be down to the wiring, fuel/coolant plumbing and the startup... followed by lots of tuning for all the changed parts.
I hope to have the swap done by early spring...
Thread Starter
Joined: Feb 2010
Posts: 906
Likes: 363
From: Champaign, IL
It took what seems like forever, but I now have my LS4 running with the LS2 throttle body (part # 12570790). For the E67 guys here are the wiring details:
C2 pin 11, Yellow wire - to Pin B of LS2 TB
C2 pin 12, Brown wire - to Pin A of LS2 TB
C2 pin 29, Tan wire - to Pin C of LS2 TB
C2 pin 44, Grey wire - to Pin E of LS2 TB
C2 pin 64, Green/White wire - to Pin F of LS2 TB
C2 pin 66, purple wire - to Pin D of LS2 TB
C3 pin 28, redundant ground - not used
C3 pin 44, redundant 5V ref - not used
Here is a video of it in action:
Here is the first start with a nasty lope... I set off the garage smoke alarms...
Here is how it idles after a couple of throttle blips:
Here are a couple of pictures of the engine bay:
C2 pin 11, Yellow wire - to Pin B of LS2 TB
C2 pin 12, Brown wire - to Pin A of LS2 TB
C2 pin 29, Tan wire - to Pin C of LS2 TB
C2 pin 44, Grey wire - to Pin E of LS2 TB
C2 pin 64, Green/White wire - to Pin F of LS2 TB
C2 pin 66, purple wire - to Pin D of LS2 TB
C3 pin 28, redundant ground - not used
C3 pin 44, redundant 5V ref - not used
Here is a video of it in action:
Here is the first start with a nasty lope... I set off the garage smoke alarms...
Here is how it idles after a couple of throttle blips:
Here are a couple of pictures of the engine bay:
Thread Starter
Joined: Feb 2010
Posts: 906
Likes: 363
From: Champaign, IL
The CTSV also ran the LS2 with an E67 (and a manual transmission), but I haven't given up on DoD yet, so I am still using the LS4 file.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Thread Starter
Joined: Feb 2010
Posts: 906
Likes: 363
From: Champaign, IL
