LS6 for 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.
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.




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.
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.
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.
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.
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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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 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.
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.

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.


I think it was $3500 plus shipping.












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