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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 02-18-2009, 09:47 PM   #1
ZZcamaro


 
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ENGINE SWAP QUESTION

Does the LS3 and the LS7 use the same harness?
What I am asking is could I take a complete LS7 and basically plug it right into the hole and harness from my LS3, then just dyno tune?

Or is the computer different...Thanks
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Old 02-18-2009, 10:25 PM   #2
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The ECM's are not the same

2009 LS7 P/N 19253067
2006/08 LS7 P/N 19166569
2010 LS3 P/N 19201859
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Old 02-18-2009, 10:36 PM   #3
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But is the wiring the same? I know that the programming would be different....is that the reason for the PCM difference?

I knwo you can plug an LSX block motor right in and just dyno tune it, I am trying to find out if the LS7 is the same thing.
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Old 02-19-2009, 10:15 AM   #4
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I do not know that but i think so,
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Old 02-19-2009, 11:26 AM   #5
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Injector sizes are different. A lot of the tables are set up for the 427 verses the 376.


With the right software you could make the changes from what I remember.

Most of the connections to the engine are the same. I would have to look at the engines side by side.

It's not a lot different that those who install stroker engines.

Don't look at GMPP of any help with this :(

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Old 02-19-2009, 01:18 PM   #6
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If you get a crate engine it think it should be plug and play minus retuning the ECM.
I am NO EXPERT and have NOT EVER done an engine swap but I am going off of what this engineer has said.

Here is a video of the LS7 concept at SEMA, towards the end the guy says the LS3 and LS7 share the same external dimensions and was a simple swap
http://video.lsxtv.com/video_detail.php?mId=7466

Here is some info on the LS7 Camaro, it had to be converted to a wet sump system as well which shouldn't be that hard.
http://www.camaro5.com/forums/showthread.php?t=9274
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Old 02-19-2009, 01:37 PM   #7
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I think when you get the crate LS7, you get the necessary computer as well. So does it really matter? I have never done an engine swap on a new vehicle, but it would see to me that is all you would need.
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Old 02-19-2009, 01:48 PM   #8
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I am not using the GM Ls7, I have an aftermarket company that builds an LS7 at 650hp.

I would be dropping that in and having it all dyno tuned. I am basically going to go after the LS7 concept car but up the ante by having more HP.

From what I can tell, I should be able to drop it in and retune the ECM to the LS7 specs, then head to the dyno....Obviously the clutch will be replaced at that time also.

If anybody else wants to get in on this let me know, I could get you a deal!!!
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Old 02-19-2009, 02:44 PM   #9
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Old 02-19-2009, 03:04 PM   #10
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2SSRS sent you a PM
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Old 02-20-2009, 03:05 PM   #11
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I am still waiting on my quotes, but is anybody else interested in an LS7? or a shortblock? PM me and I can see what I can do, no promises though, but it will still be a good deal!
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Old 02-20-2009, 08:03 PM   #12
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If you search the 04-06 GTO forums you will find at least one LS1 or LS2 to LS7 conversion.

IIRC: it was far from plug, tune and play.

You might be happier with an LS3 bored (and stroked?) to 7.0 L with an LS7 cam, injectors etc. It would make a nice sleeper since it would look just like a stock SS but run significantly faster...
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Old 02-20-2009, 08:35 PM   #13
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Talking

A wolf in sheep's clothing? I would vever do that...........
Oh yeah, there are other cool parts like the LSX7 heads pistons rods nitrous all under the engine cover....never.........
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Old 02-20-2009, 09:01 PM   #14
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There are many, many people running 400+ ci on ls1tech. You can re-use the stock computer, youre just going to need to get it retuned.
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Old 02-21-2009, 12:40 PM   #15
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ADM IS BUILDING 3 LS7 POWERED

I have 3 scheduled as well as our own getting our 427 package .Our engines come from Lingenfelter Performance Engineering and will make 650+bhp.

If you need any help or have specific questions I will be glad to answer them.

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Old 02-21-2009, 12:55 PM   #16
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MY hero. sigh. I will be keeping you in mind for sure.
What about PCM programming? How has that experience been? (for me its a brand new concept and an area where I have feared to tread)
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Old 02-21-2009, 03:56 PM   #17
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At ADM PERFORMANCE we do all of our tuning in house and on the street.We are proud to be a reseller of Lingenfelter Performance Engineering engine components.We back all of our work with a full 1 year warranty.

Please visit our website at www.admperformance.com for all the current products we have for the 2010 camaro.

Thanks
Andy Mages

Last edited by ADM PERFORMANCE; 02-22-2009 at 08:01 AM.
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Old 02-23-2009, 01:17 PM   #18
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Quote:
Originally Posted by ZZcamaro View Post
I am not using the GM Ls7, I have an aftermarket company that builds an LS7 at 650hp.

I would be dropping that in and having it all dyno tuned. I am basically going to go after the LS7 concept car but up the ante by having more HP.

From what I can tell, I should be able to drop it in and retune the ECM to the LS7 specs, then head to the dyno....Obviously the clutch will be replaced at that time also.

If anybody else wants to get in on this let me know, I could get you a deal!!!
I am in Pitt also, where are you getting this done? I might be interested also.
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Old 02-23-2009, 02:11 PM   #19
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Quote:
Originally Posted by rgrizzard View Post
I am in Pitt also, where are you getting this done? I might be interested also.
I am just south of the city, in Canonsburg area. I actually plan to use my buddy's shop to do the work, unless I elect to use the builder for the install. If you are really interested in this idea, please let me know on here or in a PM and I will mention it to the builder.
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