[Z06] c7 zo6 engines
Thread Starter
Melting Slicks
Joined: Sep 2007
Posts: 2,147
Likes: 284
From: cary Il
c7 zo6 engines
been reading some threads in the c6 zo6 forum and noticed a lot of threads on motor failures due to in part from dropping valves. just wondering if the c5 zo6 motors are more durable, or do they also have there share of problems that would lead to engine failures, besides the spring issues.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
been reading some threads in the c6 zo6 forum and noticed a lot of threads on motor failures due to in part from dropping valves. just wondering if the c5 zo6 motors are more durable, or do they also have there share of problems that would lead to engine failures, besides the spring issues.
When the engine is modified, or a radical tune is used, the reliability drops like a lead balloon.
actually the LS7s are also very reliable, just keep the shift points at 6-6200, not 6500 and keep the engine stock.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Tech Contributor
Joined: Jan 2004
Posts: 20,030
Likes: 289
From: Wylie TX --> Less is More, except under the hood !
Toque
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
SS are OK for up to 6200, but above, and 6500 to 7200 rpms the sodium filled and fresh springs are needed.
Le Mans Master
Joined: Sep 2003
Posts: 6,275
Likes: 226
From: Farmington CT
Cruise-In VII Veteran
Drifting
Joined: Oct 2011
Posts: 1,980
Likes: 10
From: Crook County
Glad the only LS6's that had Valve Spring problems were the 02 and 03's, Well not glad but glad it wasnt mine... The very very early 01 LS6 had a problem with ring flutter and allowing more oil to be used then normal, but that was at constent use in the high RPM range and was only on a few 01 Z06's in the early production months of the summer of 2000... Didnt cause any performance problems or engine problems, Just annoying because you would have to check your oil every once in a while to top it off a little... I have a 04/01 production model and have never had 1 problem EVER.... Its a beautiful thing 
Last edited by Breze84; Aug 2, 2012 at 01:15 AM.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Burning Brakes
Joined: Apr 2010
Posts: 1,073
Likes: 3
From: Asheville NC
http://forums.corvetteforum.com/c5-z...-failures.html
1st Gear
Joined: Aug 2012
Posts: 1
Likes: 0
c7 zo6 engines
The C7 Corvette will NOT be available in the ZR1 model when it debuts. GM admitted this during the 2012 C5, C6 Corvette Bash in Bowling Green at the National Corvette Museum that "the 2013 would be the last year for the ZR1 and they wanted to send it out with a bang."
engine 4.0
engine 4.0
Instructor
Joined: May 2003
Posts: 233
Likes: 0
Another LS7 down:
http://forums.corvetteforum.com/c6-z...rop-valve.html
Seeing all these catastrophic engine failures is really making me re-think adding a C6Z to the stable at some point down the line...
At least on the C5Z's with the valve springs it was mostly '02's and early '03's, and an inexpensive preventative fix...and sometimes nothing bad happened when the spring broke (some guys were lucky)...doesn't seem to be the case with the LS7...
http://forums.corvetteforum.com/c6-z...rop-valve.html
Seeing all these catastrophic engine failures is really making me re-think adding a C6Z to the stable at some point down the line...
At least on the C5Z's with the valve springs it was mostly '02's and early '03's, and an inexpensive preventative fix...and sometimes nothing bad happened when the spring broke (some guys were lucky)...doesn't seem to be the case with the LS7...
Le Mans Master
Joined: May 2011
Posts: 5,188
Likes: 545
From: Ontario
The C7 Corvette will NOT be available in the ZR1 model when it debuts. GM admitted this during the 2012 C5, C6 Corvette Bash in Bowling Green at the National Corvette Museum that "the 2013 would be the last year for the ZR1 and they wanted to send it out with a bang."
engine 4.0
engine 4.0
You'd be a fool to believe........it's money and if they can make it, they will.