View Poll Results: Have you experienced LS7 engine problems?
No
128
70.33%
Yes
54
29.67%
Voters: 182. You may not vote on this poll
[Z06] LS7 Engine Blown?
11-12-2012, 12:10 PM
#21
Advanced
07 zo6
purchased my car new in 07,6 months later added bm shifter,varam intake.kooks exhaust,diablopredator.no problem until i added a comp cam with springs in september 2012,300 miles later #2 HOLLOW EXHAUST VALVE BROKE,now pulling grenadedengine,should have changed all exhaust valves,im warning all my fellow members,dont leave those hollow valves in youR ls7 or else!i drive it like i stole it since new.no problem till COMPcam n springs went in.
11-12-2012, 12:58 PM
#24
Advanced
on mine,less than 10000 total,around 300 since cam and spring change,also ported throttle and intake at same time but unfortunately didnt pull heads to ridem of those hollow valves,now im pulling engine to findout if machineshop can resleave and repair cyl. head
11-12-2012, 01:27 PM
#25
Le Mans Master
2007,bought showroom new 12/07 from Diamond Chevy Worchester Ma. No motor issues or V.T. noise what so ever. No oil issues. Street driven, brisk acceleration at times .motor is bone stock. And I think this matters, the FRC's were removed at delivery .My belief is the engine heat dissipates more rapidly without them.
11-12-2012, 01:33 PM
#26
Safety Car
I think your choice of oil is more significant in dissipating heat from the guides and heads than removing the engine covers.
2007,bought showroom new 12/07 from Diamond Chevy Worchester Ma. No motor issues or V.T. noise what so ever. No oil issues. Street driven, brisk acceleration at times .motor is bone stock. And I think this matters, the FRC's were removed at delivery .My belief is the engine heat dissipates more rapidly without them.
11-12-2012, 01:37 PM
#27
Supporting Vendor
Member Since: Nov 2005
Location: Supporting the Corvette Community at Abel Chevrolet in Rio Vista, CA 707-374-6317 Ext.123
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St. Jude Donor '08
I wonder why the first 250 polls posted on here over the last year were not good enough to get the information the OP wanted. 
11-12-2012, 01:41 PM
#28
Instructor
Member Since: Aug 2006
Location: schiedam ZUID-HOLLAND
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2 engines blown.
First after 32.000 km and second after 60.000 km.
Car is stock, only killer bee intake,HRE dry sump system and bigger oil cooler.
First engine is replaced under warranty but with a lot of problems.
Had to threat them with a lawyer and it took 6 month before i could drive again.
Second engine was not a warranty because it was 2 month out of warranty.
Car still is in my garage for 18 months now with blown engine.......
Grtz, Hans
First after 32.000 km and second after 60.000 km.
Car is stock, only killer bee intake,HRE dry sump system and bigger oil cooler.
First engine is replaced under warranty but with a lot of problems.
Had to threat them with a lawyer and it took 6 month before i could drive again.
Second engine was not a warranty because it was 2 month out of warranty.
Car still is in my garage for 18 months now with blown engine.......
Grtz, Hans
11-27-2012, 01:17 AM
#32
Team Owner
12-27-2013, 12:45 AM
#36
Instructor
I have a totally stock 2013 427 that I bought new. It died at 5000 miles. It appears the connecting rods did not have enough clearance and ground bits of titanium into my oil. Chevy replaced the motor, I have about 500 miles on the new motor and so far, no problems.
12-27-2013, 06:20 AM
#37
Drifting
How in the world has GM gotten away with this crap? Model year 06-13, and the engine still has the same issues. I'm shocked at how accepting of this some people are. The LS7 could've been great. Smh.
12-27-2013, 07:56 AM
#38
Burning Brakes
2007 third owner, 67000 miles car looked like it wasn't tracked but was using a bit of oil. Pulled the exhaust manifold and oil was caked with burnt oil and the valves were shot. New PRC heads no oil use since. 
12-27-2013, 08:35 AM
#39
Safety Car
2006 with 9100 miles - Stock and no issues, all valves in spec. The car has been totally reliable and well built. I would buy another one. 
Last edited by Flareside; 12-27-2013 at 08:51 AM.
12-27-2013, 10:21 AM
#40
Melting Slicks
08 35,000 miles, stock, so far so good, I have an extended warranty and will renew it in September....
then will buy a 2015 C-7 ZO6, that should make the 08Z easier to sell
then will buy a 2015 C-7 ZO6, that should make the 08Z easier to sell
Last edited by PatriotZ; 12-27-2013 at 10:25 AM.