LS1 PCM controlling an LS3
Thread Starter
Launching!
Joined: Jan 2006
Posts: 274
Likes: 68
From: Okemos, MI
LS1 PCM controlling an LS3 Hi folks!
I'm shoulder-deep in an LS3 swap into my '02 Z28. Details here if you care to read the full story.
I knew I needed a 24x reluctor, and had that taken care of early. It's just come to my attention that gen3 and gen4 cam sprockets are also different, and I think I might have to backtrack a bit and swap the cam sprocket.
Here's what I have that's relevant:
A gen4 cam sprocket, p/n 12586481 (shown above)
LS3 front cover with LS3 cam sensor.
Racetronix cam sensor adapter harness
0411 PCM (stock from my car)
So I have a gen4 sprocket and sensor, and the ability to connect that to my harness.
I just ran across some stuff that says that the gen4 sprocket is "only compatible with a 58x crank reluctor." Is this true? Do I need a different sprocket? Furthermore, is my sensor going to work right?
Thanks!
I'm shoulder-deep in an LS3 swap into my '02 Z28. Details here if you care to read the full story.
I knew I needed a 24x reluctor, and had that taken care of early. It's just come to my attention that gen3 and gen4 cam sprockets are also different, and I think I might have to backtrack a bit and swap the cam sprocket.
Here's what I have that's relevant:
A gen4 cam sprocket, p/n 12586481 (shown above)
LS3 front cover with LS3 cam sensor.
Racetronix cam sensor adapter harness
0411 PCM (stock from my car)
So I have a gen4 sprocket and sensor, and the ability to connect that to my harness.
I just ran across some stuff that says that the gen4 sprocket is "only compatible with a 58x crank reluctor." Is this true? Do I need a different sprocket? Furthermore, is my sensor going to work right?
Thanks!
Thread Starter
Launching!
Joined: Jan 2006
Posts: 274
Likes: 68
From: Okemos, MI
Seems like it does apply -- I need a 1x cam gear.
Did some googling and found this super helpful doc: https://www.lingenfelter.com/PDFdown...nformation.pdf
That indicates that the cam gear I need is GM part number 12576407. Best price shipped I found was at Amazon:
Too bad I figured this out after I got the entire front accessory drive assembled.
😭
Did some googling and found this super helpful doc: https://www.lingenfelter.com/PDFdown...nformation.pdf
That indicates that the cam gear I need is GM part number 12576407. Best price shipped I found was at Amazon:
Too bad I figured this out after I got the entire front accessory drive assembled.
😭 24x needs a 1x cam gear and the 58x needs 4x gear. I did a dod in my gen 4 and needed a 3 bolt 4x instead of single bolt. Or run the 58x and get the box but since you have the 24x in there get the gear for it
Teching In
Joined: Dec 2018
Posts: 38
Likes: 2
From: Las Cruces, NM
A GTO 1x timing gear will work perfect, make sure the harness for your cam sensor is plugged directly into the cam sensor and not the little piggyback on the front cover, you will have issues when it’s trying to start, I did a full LS3 swap into a c5z if ya got questions shoot me a PM!
Thread Starter
Launching!
Joined: Jan 2006
Posts: 274
Likes: 68
From: Okemos, MI
Thanks! I do have a few questions. I'll reach out.
Bought the same adapter harness parts. I used s Cloyes timing set for an LS1. Added the 2 bolt chain damper as well.
24x crank wheel.
Went into my C5. Runs damn well too.
You will also have to put the LS1 knock sensors on the side of the block.
Ron
24x crank wheel.
Went into my C5. Runs damn well too.
You will also have to put the LS1 knock sensors on the side of the block.
Ron
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Teching In
Joined: Dec 2018
Posts: 38
Likes: 2
From: Las Cruces, NM
[QUOTE=RonSSNova;20297724
Went into my C5. Runs damn well too.
You will also have to put the LS1 knock sensors on the side of the block.
Ron[/QUOTE]
RACETRONIX has some kick @SS stuff, I’ll be going back for some stuff through them for later builds, thumbs up on the knock sensor relocation! LS3’s are the perfect all around swap IMO enjoy!
Went into my C5. Runs damn well too.
You will also have to put the LS1 knock sensors on the side of the block.
Ron[/QUOTE]
RACETRONIX has some kick @SS stuff, I’ll be going back for some stuff through them for later builds, thumbs up on the knock sensor relocation! LS3’s are the perfect all around swap IMO enjoy!
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Launching!
Joined: Jan 2006
Posts: 274
Likes: 68
From: Okemos, MI