[Z06] Which is faster? stock C6Z or C5Z 450whp..
07-23-2014, 07:49 AM
#61
Racer
I'm sure the number is matched or exceeded by C5 Z06's with stock springs. Mine were actually fine at 75k miles, but I changed them out when doing a bigger cam.
The thing about the LS7's issues that's a bit scary is and the fix is expensive and theoretically hurts performance (heavy SS valves). Plus affected years is huge compared to the LS6's valve spring issue. 01's and 04's can rest easy, if I had any year LS7 I'd be worried.
The thing about the LS7's issues that's a bit scary is and the fix is expensive and theoretically hurts performance (heavy SS valves). Plus affected years is huge compared to the LS6's valve spring issue. 01's and 04's can rest easy, if I had any year LS7 I'd be worried.
Personally, I was never one to just start throwing parts at a project hoping for a cure. I also wouldn't be willing to drop several thousands of dollars on a "fix" that does not have significant real world testing. How often do people drive their LS7s???
07-24-2014, 10:13 PM
#62
Pro
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If anyone knows of a BONE STOCK C6Z in the Chicagoland area that would like to run my C5Z lemme know! I make 430 RWHP.
This is not a callout me thinking i can beat one. Just to see how a 430 RWHP C5Z would do against a BONE STOCK C6Z.
Results will be reported to this thread. I think i'll get pulled on in the top top end, but not that hard. I could be wrong.
This is not a callout me thinking i can beat one. Just to see how a 430 RWHP C5Z would do against a BONE STOCK C6Z.
Results will be reported to this thread. I think i'll get pulled on in the top top end, but not that hard. I could be wrong.
07-24-2014, 11:29 PM
#63
Drifting
07-25-2014, 11:15 AM
#64
Drifting
Well, the scariest thing is that the root cause has not been determined. Is it a valve guide issue (material)? Is it a hollow valve stem issue? Is it a sodium filled valve issue? Is it a geometry issue? No one knows for certain...so the "fix" right now is to change all of the variables at once: Solid SS valves with bronze guides.
Personally, I was never one to just start throwing parts at a project hoping for a cure. I also wouldn't be willing to drop several thousands of dollars on a "fix" that does not have significant real world testing. How often do people drive their LS7s???
Personally, I was never one to just start throwing parts at a project hoping for a cure. I also wouldn't be willing to drop several thousands of dollars on a "fix" that does not have significant real world testing. How often do people drive their LS7s???
Having driven a C6 Z06 though, they are badass. The torque is amazing.