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LS6 for a C5

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Old Jan 6, 2009 | 05:50 PM
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Default LS6 for a C5

Has anyone ever installed a "Create" LS6 motor in a C5?
If so, where did you get yours and was there any modifications needed to the C5?
The reason I'm asking... my C5 is getting up on miles and I'm think about instead of just a rebuild... I'd look into a new upgraded motor.
But I'm not sure what motor would be best to meet the performance I'm looking for and not cost a mint.
Any sugggestions?
Thanks.
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Old Jan 6, 2009 | 05:54 PM
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Originally Posted by jon's2001
Has anyone ever installed a "Create" LS6 motor in a C5?
If so, where did you get yours and was there any modifications needed to the C5?
The reason I'm asking... my C5 is getting up on miles and I'm think about instead of just a rebuild... I'd look into a new upgraded motor.
But I'm not sure what motor would be best to meet the performance I'm looking for and not cost a mint.
Any sugggestions?
Thanks.
Can't answer that until we know what your budget is.
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Old Jan 6, 2009 | 07:03 PM
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found one for "Your Price: $5,499.00"
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Old Jan 6, 2009 | 07:39 PM
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I was thinking a LS6 would run about in the high $ 5's..
I guess I still have two questions: Do you gain anymore (or any less) if you just upgraded to a say LS2?
I would hope cost would be less. But the HP is about the same correct?
Upgrading to a "non-C5" motor.. is it do able with out a lot of modifications to the C5?
In this case.. LS6 vs a LS1 or 2.
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Old Jan 6, 2009 | 08:42 PM
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Depends what your goals and budget are. For around 5k you can go with a 402 (short block). There are many here that put down over 500rwhp with 402ci motors.
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Old Jan 6, 2009 | 11:31 PM
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Originally Posted by jon's2001
I was thinking a LS6 would run about in the high $ 5's..
I guess I still have two questions: Do you gain anymore (or any less) if you just upgraded to a say LS2?
I would hope cost would be less. But the HP is about the same correct?
Upgrading to a "non-C5" motor.. is it do able with out a lot of modifications to the C5?
In this case.. LS6 vs a LS1 or 2.
Im no expert mechanic...but I just want o clear something up. This last post leads me to believe that you may be a little confused on the motors. So just to clarify for you, LS6 IS a C5 motor (C5Z), LS2 is a C6 motor. If I misunderstood then disregard.

I would think that you could rebuild an LS1 block to LS6 performance...or above, for less than the cost of a new crate though. Again...I could be wrong.
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Old Jan 7, 2009 | 12:49 AM
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Originally Posted by Vette-kid
Im no expert mechanic...but I just want o clear something up. This last post leads me to believe that you may be a little confused on the motors. So just to clarify for you, LS6 IS a C5 motor (C5Z), LS2 is a C6 motor. If I misunderstood then disregard.

I would think that you could rebuild an LS1 block to LS6 performance...or above, for less than the cost of a new crate though. Again...I could be wrong.

No, this is just another pulling teeth session....that's all.
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Old Jan 7, 2009 | 09:30 AM
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Originally Posted by lucky131969
No, this is just another pulling teeth session....that's all.
Mike, sorry, but I'm not sure what you mean by "Pulling Teeth".

Sean, you are correct I did have my motors confused.
"So just to clarify for you, LS6 IS a C5 motor (C5Z), LS2 is a C6 motor. If I misunderstood then disregard.
I would think that you could rebuild an LS1 block to LS6 performance...or above, for less than the cost of a new crate though."

My reasons for asking the question is: My 2001 LS1 is getting a lot of miles on it. I was trying to find out if a upgrade to a C6 LS2 config would be the best way to go or should I just stay with a C5 config.
I'm not sure if there are any real avantages of the C6 LS2 motor over a C5 upgrade.

Sean thanks for getting me stright on the motors.

However my question is the same: And Sean you answered part of it. Has anyone tried a C6 motor config in a C5. If so, is it stright forward or is there a number of changes that need to be made to the C5 to make the C6 motor work? (motor mounts, wiring, etc).
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Old Jan 7, 2009 | 09:52 AM
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Originally Posted by jon's2001
Mike, sorry, but I'm not sure what you mean by "Pulling Teeth".

Sean, you are correct I did have my motors confused.
"So just to clarify for you, LS6 IS a C5 motor (C5Z), LS2 is a C6 motor. If I misunderstood then disregard.
I would think that you could rebuild an LS1 block to LS6 performance...or above, for less than the cost of a new crate though."

My reasons for asking the question is: My 2001 LS1 is getting a lot of miles on it. I was trying to find out if a upgrade to a C6 LS2 config would be the best way to go or should I just stay with a C5 config.
I'm not sure if there are any real avantages of the C6 LS2 motor over a C5 upgrade.

Sean thanks for getting me stright on the motors.

However my question is the same: And Sean you answered part of it. Has anyone tried a C6 motor config in a C5. If so, is it stright forward or is there a number of changes that need to be made to the C5 to make the C6 motor work? (motor mounts, wiring, etc).
^^There have been many instances of LS2, LS3, and LS7 motors being installed into C5s. There are some differences between these motors and the LS1 and LS6 motors that are in our C5s.

There are many posts on this subject. The major ones are the reluctor wheel (C5 is 24 and C6 is 58?), the location of the knock sensors, and I believe a different wiring harness.

Rather than buy a crate motor, I would suggest buying a forged after-market motor. It's a much better value.

One additional consideration that you did not mention is that your drivetrain may not be up to the task of handling the additional HP. Upgrading the driveline is expensive.
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Old Jan 7, 2009 | 04:50 PM
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Originally Posted by Independent1
^^There have been many instances of LS2, LS3, and LS7 motors being installed into C5s. There are some differences between these motors and the LS1 and LS6 motors that are in our C5s.

There are many posts on this subject. The major ones are the reluctor wheel (C5 is 24 and C6 is 58?), the location of the knock sensors, and I believe a different wiring harness.

Rather than buy a crate motor, I would suggest buying a forged after-market motor. It's a much better value.

One additional consideration that you did not mention is that your drivetrain may not be up to the task of handling the additional HP. Upgrading the driveline is expensive.
Well said.
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Old Jan 7, 2009 | 05:28 PM
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I have an LS6 in my 2000 coupe. The previous owner had a performance shop do it, so I don't really have any swap details, but it looks like the stock wiring harness and everything was used. You'd have no idea it was an LS6 unless you looked at the block/head castings.
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Old Jan 7, 2009 | 05:36 PM
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The only real difference between an LS6 engine, and a LS1 engine (of 2001-2004 vintage), is the heads, and the cam. That is it.

No wiring differences, no MAF difference, no TB difference, no intake or exhaust manifold differences, no injector differences.
Buying a complete crate engine to replace a 2001 LS1 would a waste...but if you want a fresh LS6 ro replace your LS1, buy a longblock, and transfer all your current external parts over (since they'd all be the same parts).

Again, my comments are for the OP, who stated he has a 2001. There are numerous differences from the 97-00s.

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Old Jan 7, 2009 | 07:49 PM
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Give Gene Cully a call when you buy your crate motor. 610 862-0550 Best price for CF members. I bought a LS6 longblock from him.

Steve
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Old Jan 7, 2009 | 09:53 PM
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Been there done it! Bought my longblock from crateenginedepot.com
I think it was $3500 plus shipping.
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Old Jan 9, 2009 | 05:13 PM
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Glad my $.02 was worth something (almost never is)

Im curious as to what you consider high mileage?
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