Any C5's with an LS2?
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,208
Likes: 6
From: Prince George VA
Any C5's with an LS2?
I just spun a bearing in my vette a few days ago. I'm really thinking about putting another motor in instead of rebuilding. My current car was cammed and putting down 390 at the wheels. I was thinking of just putting in a stock LS2 long block and getting a little more HP to the wheels than the cammed LS1 was doing.
So my question is. Since I am going to change the motor is it best to get the LS2 over the LS1? What all needs to be changed for the swap? I read somewhere it was crank sensor and something to do with the ignition had to be changed. Also I read where the LS6 intake would be better than the LS2's? So would it be wise to keep my stock port and polished throttle body and intake to swap onto the LS2 long block?
So my question is. Since I am going to change the motor is it best to get the LS2 over the LS1? What all needs to be changed for the swap? I read somewhere it was crank sensor and something to do with the ignition had to be changed. Also I read where the LS6 intake would be better than the LS2's? So would it be wise to keep my stock port and polished throttle body and intake to swap onto the LS2 long block?
Drifting
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
A crate LS6 has the same power level as the LS2 and you do not have to modify the ignition system. The LS2 has a different numbered tooth reluctor wheel on the crankshaft than the LS1/6, the cam sensor is in a different location and the number of teeth the cam sensor senses may be different also (4x vs. 2x).
The PCM in your car is programmed for the LS1/6 reluctor wheel and cam. Installing an LS2would require either disassembly of the engine to replace these items with the correct ones or the installation of a signal converter. The signal converters are available from only one source and are expensive in my opinion. Replacing the complete engine over a spun bearing seems wasteful.
The PCM in your car is programmed for the LS1/6 reluctor wheel and cam. Installing an LS2would require either disassembly of the engine to replace these items with the correct ones or the installation of a signal converter. The signal converters are available from only one source and are expensive in my opinion. Replacing the complete engine over a spun bearing seems wasteful.
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
If you're thinking of going with a long block replacement, go with the LS3. It may cost you a little more going in but it's a better setup. Katech seems to have the bugs worked out on their reluctor converter box so it's no big deal.
Instructor
Joined: Apr 2008
Posts: 153
Likes: 0
From: Cincinnati Ohio
I bought an ls2 intending a minor upgrade. Next thing you know I have a 402 stroked with a big cam and 545 hp at the wheels. Depends on what you are looking for in the end, but you can never have too much power, and with the ls2 or 3, you have room to grow.
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,208
Likes: 6
From: Prince George VA
Right now I am interested in buying an LS3 this guy is selling. Long block. What is a good parts list for everything needed to swap out the factory LS1 to an LS3?
So far I've been told I would need the LS2 throttle body, LS3 intake manifold, front cover with cam sensor, lingenfelter reluctor box, LS3 fuel rails.
Would I need larger fuel injectors as well? This LS3 has a small cam. Not sure if the stock LS1 injectors will keep up with the fuel demand.
Since my motor will be out and I know my clutch was about to go anyways. Would the LS7 clutch and flywheel be a good choice?
Sorry if this is too many questions, I have been searching for information on all this and want to clarify and get more opinions. And I want to have everything I need at the time of engine swap.
So far I've been told I would need the LS2 throttle body, LS3 intake manifold, front cover with cam sensor, lingenfelter reluctor box, LS3 fuel rails.
Would I need larger fuel injectors as well? This LS3 has a small cam. Not sure if the stock LS1 injectors will keep up with the fuel demand.
Since my motor will be out and I know my clutch was about to go anyways. Would the LS7 clutch and flywheel be a good choice?
Sorry if this is too many questions, I have been searching for information on all this and want to clarify and get more opinions. And I want to have everything I need at the time of engine swap.
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Right now I am interested in buying an LS3 this guy is selling. Long block. What is a good parts list for everything needed to swap out the factory LS1 to an LS3?
So far I've been told I would need the LS2 throttle body, LS3 intake manifold, front cover with cam sensor, lingenfelter reluctor box, LS3 fuel rails.
Would I need larger fuel injectors as well? This LS3 has a small cam. Not sure if the stock LS1 injectors will keep up with the fuel demand.
Since my motor will be out and I know my clutch was about to go anyways. Would the LS7 clutch and flywheel be a good choice?
Sorry if this is too many questions, I have been searching for information on all this and want to clarify and get more opinions. And I want to have everything I need at the time of engine swap.
So far I've been told I would need the LS2 throttle body, LS3 intake manifold, front cover with cam sensor, lingenfelter reluctor box, LS3 fuel rails.
Would I need larger fuel injectors as well? This LS3 has a small cam. Not sure if the stock LS1 injectors will keep up with the fuel demand.
Since my motor will be out and I know my clutch was about to go anyways. Would the LS7 clutch and flywheel be a good choice?
Sorry if this is too many questions, I have been searching for information on all this and want to clarify and get more opinions. And I want to have everything I need at the time of engine swap.
You will need to notch the engine mount on the drivers side but that's a few minutes with a grinder.
Good luck!
Melting Slicks
Joined: Nov 2002
Posts: 2,884
Likes: 260
From: Jamison Pa
St. Jude Donor '11-'25
No problem with either
The stock coils work just fine.
Bob K.
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Pro
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From: Ashburn VA
Melting Slicks
Joined: Oct 2000
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From: Freehold, NJ
Melting Slicks
Joined: Jan 2009
Posts: 2,127
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From: Easley/Anderson South Carolina
get a ls2 out of an 05 GTO. no relucter wheel issues.
Things I HAD to do for the swap;
Oil PSI relocation- factory sensor hit cowl
Knock sensor/cam sensor harness
throttle body harness- used LS2 throttle body
clearance pass side front of block & pass side engine bracket
LS7 clutches are kinda heavy. I would go with a chromoly flywheel with a Monster STG3 or similar clutch. mine holds fine in the 475-500whp area. Im also running a Tick Master, factory slave cylinder, and remote bleeder (life saver by the way.)
Things I HAD to do for the swap;
Oil PSI relocation- factory sensor hit cowl
Knock sensor/cam sensor harness
throttle body harness- used LS2 throttle body
clearance pass side front of block & pass side engine bracket
LS7 clutches are kinda heavy. I would go with a chromoly flywheel with a Monster STG3 or similar clutch. mine holds fine in the 475-500whp area. Im also running a Tick Master, factory slave cylinder, and remote bleeder (life saver by the way.)
Last edited by sabastian458; Oct 24, 2011 at 09:37 AM.
Pro
Joined: Jul 2004
Posts: 654
Likes: 6
From: Indialantic Fl
Right now I am interested in buying an LS3 this guy is selling. Long block. What is a good parts list for everything needed to swap out the factory LS1 to an LS3?
So far I've been told I would need the LS2 throttle body, LS3 intake manifold, front cover with cam sensor, lingenfelter reluctor box, LS3 fuel rails.
Would I need larger fuel injectors as well? This LS3 has a small cam. Not sure if the stock LS1 injectors will keep up with the fuel demand.
Since my motor will be out and I know my clutch was about to go anyways. Would the LS7 clutch and flywheel be a good choice?
Sorry if this is too many questions, I have been searching for information on all this and want to clarify and get more opinions. And I want to have everything I need at the time of engine swap.
So far I've been told I would need the LS2 throttle body, LS3 intake manifold, front cover with cam sensor, lingenfelter reluctor box, LS3 fuel rails.
Would I need larger fuel injectors as well? This LS3 has a small cam. Not sure if the stock LS1 injectors will keep up with the fuel demand.
Since my motor will be out and I know my clutch was about to go anyways. Would the LS7 clutch and flywheel be a good choice?
Sorry if this is too many questions, I have been searching for information on all this and want to clarify and get more opinions. And I want to have everything I need at the time of engine swap.
Premium Supporting Vendor
Joined: Oct 2005
Posts: 13,975
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From: Clinton Township MI
C7 of Year Finalist (track prepared) 2019
Lingenfelter makes the converter box, not Katech.
Pro
Joined: Jul 2004
Posts: 654
Likes: 6
From: Indialantic Fl
Halltech is making a "Killer Bee 2" specifically for the purpose of putting LS3/LS7 in a C5 car. It comes with a probe type maf sensor like the LS7 motors use with a conversion harness. I used this on my LS7 conversion in my 2000 FRC and am very happy with it. Good clean look and flows lots of air. You can see it on their website.
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,208
Likes: 6
From: Prince George VA
Halltech is making a "Killer Bee 2" specifically for the purpose of putting LS3/LS7 in a C5 car. It comes with a probe type maf sensor like the LS7 motors use with a conversion harness. I used this on my LS7 conversion in my 2000 FRC and am very happy with it. Good clean look and flows lots of air. You can see it on their website.
http://www.halltechsystems.com/product_p/kbls6conv.htm
Pro
Joined: Jul 2004
Posts: 654
Likes: 6
From: Indialantic Fl
Is this the one you are refering to? Looks nice!
http://www.halltechsystems.com/product_p/kbls6conv.htm
http://www.halltechsystems.com/product_p/kbls6conv.htm
