Today's Posts Mark Forums Read Calendar
Go Back   NJFBOA - Home of New Jersey's Camaros and Firebirds > Tech Forums > Engine / Power / Tuning

Notices


Reply
 
Thread Tools
Old 12-02-2021, 06:48 PM   #1
V
Stalker
 
V's Avatar
 
Join Date: Aug 2004
Posts: 12,077
iTrader: (12)
ls3 ecm running an ls1/6?

Basic question... Can an LS3 ecm (2010/2011) run an ls1/6 engine?
I know the reluctor wheel on the crank would need to be swapped out for a 58x instead of the stock 24x, but other than that, would it work? Obviously the wiring harness would be custom.


The reason I ask, is I'm thinking of doing a LS swap into a 2010 vehicle and to be "legal" it has to be an engine of the same or newer year. I have an LS1 /T56 from my GTO I could use and figured if I could run a 2010 ecm with the applicable emissions equipment from a 2010 ls3, I might make it all work. If its just not possible/feasible, id look into selling the ls1 and buying a newer LT1 and making that work somehow(or buy a different donor car maybe).


Edit: The more I think about it, it may not even matter. If nj dmv asks for evidence that its a 2010 engine, it'd still be an 04 paperwork wise. Im not sure if just a '10 ecm running the corresponding emissions equipment would suffice.

I'm almost wondering if Just using the stock 04 pcm, and having the vin re-flashed to match the car would pass inspection

Last edited by V; 12-02-2021 at 07:08 PM.
V is offline   Reply With Quote
Old 12-04-2021, 04:52 PM   #2
V
Stalker
 
V's Avatar
 
Join Date: Aug 2004
Posts: 12,077
iTrader: (12)
After a little more research, it seems I would need a newer pcm anyway which has the gm LAN wiring, high and low speed. That way the bcm can talk to it. So a 08+ ls3 pcm should work. I'd probably just find a 2010 to match the car. Would need a dbw tb then as well which is ok. Maybe I'll just start pricing out a ls3 dropout.
V is offline   Reply With Quote
Old 12-20-2021, 03:36 PM   #3
PolarBear
Ebearnezer Scrooge/Power Member/Lips
 
PolarBear's Avatar
 
Join Date: May 2006
Location: Hamilton, Mercer county
Posts: 4,141
iTrader: (16)
AFAIK the GEN IV stuff only works with GEN IV stuff. The cam and crank reluctors are different tooth count. LPE used to make a box to covert the GENIV engine to work in a GEN III ECM, IIRC, but not the other way
PolarBear is offline   Reply With Quote
Reply

  NJFBOA - Home of New Jersey's Camaros and Firebirds > Tech Forums > Engine / Power / Tuning

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

» Sponsor List














All times are GMT -5. The time now is 04:55 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.