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?
11-09-2012, 09:19 PM
#1
Racer
Thread Starter
LS7 Engine Blown?
Please vote whether you have had LS7 engine problems or not.
After you vote please post the year of your Vette and what your problem was if you had one. Thanks.
I would like a ZO6 but hearing about these engines having problems turns me away from one. I realize it is most likely a smaller percentage of ZO6’s that have experienced engine problems but it is still an expensive problem if you should have it. I think the LS7 motor itself is $16k.
After you vote please post the year of your Vette and what your problem was if you had one. Thanks.
I would like a ZO6 but hearing about these engines having problems turns me away from one. I realize it is most likely a smaller percentage of ZO6’s that have experienced engine problems but it is still an expensive problem if you should have it. I think the LS7 motor itself is $16k.
Last edited by Chevy Performance; 11-09-2012 at 09:21 PM.
11-09-2012, 09:58 PM
#2
Safety Car
Biased poll will be inherently biased.
Buy an unmodified car with a healthy warranty, or buy a used car at a discount and rework the heads. You take your chances to some degree either way.
If that isn't tolerable, then buy something else (with a warranty).
Buy an unmodified car with a healthy warranty, or buy a used car at a discount and rework the heads. You take your chances to some degree either way.
If that isn't tolerable, then buy something else (with a warranty).
11-09-2012, 10:11 PM
#3
Team Owner
No problems...'09 C6Z w/ Halltech MF103 CAI, B&B Fusions, cistom x-pipe, and ~8,800 Miles as of today. Have a GMPP until Apr 2016. 
11-09-2012, 10:34 PM
#4
Burning Brakes
The only problem I have is traction. Even with my BIG 345 Michelin PS2's. 
2007 with 9,600 miles. Halltech Super Bee MF 103, 1 7/8" coated KOOKS LTH's without cats and Generation III Fusion EXTREMES. I definitely do not see any blue smoke. For me, few things are as exciting as ripping through the gears with my MGW short throw shifter and SCREAMING Billy Boat exhaust. 
2007 with 9,600 miles. Halltech Super Bee MF 103, 1 7/8" coated KOOKS LTH's without cats and Generation III Fusion EXTREMES.
I definitely do not see any blue smoke. For me, few things are as exciting as ripping through the gears with my MGW short throw shifter and SCREAMING Billy Boat exhaust.
11-11-2012, 10:23 AM
#5
Melting Slicks
Member Since: Jul 2005
Location: winter haven florida
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St. Jude Donor '12
2006 63000 miles. exhaust valves and guides worn. found and replaced at 55000 miles during cam and heads upgrade. problem solved and pulls much harder than stock.
11-11-2012, 10:40 AM
#6
Team Owner
2006, at 27k miles valve guides/etc were shot. Replaced with new heads.
At 30k miles a lifter/cam failed.
At 30k miles a lifter/cam failed.
11-11-2012, 02:47 PM
#7
Team Owner
2006 w/25,000 miles. Intake and tune. No problems so far. Pulling the heads this winter... Which I guess is pretty soon...
11-11-2012, 03:13 PM
#9
Intermediate
Member Since: Oct 2011
Location: San Francisco Peninsula California
Posts: 38
Likes: 0
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Ls7
2011. Only issue was a Check Engine Light which was due to a CAI without a tune. I don't consider this a problem. It's all stock now.
Last edited by Lazyflatfoot; 11-11-2012 at 03:40 PM. Reason: added info
11-11-2012, 05:52 PM
#10
Melting Slicks
Member Since: Oct 2005
Location: Goleta California
Posts: 2,516
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The only problem I have is traction. Even with my BIG 345 Michelin PS2's.
2007 with 9,600 miles. Halltech Super Bee MF 103, 1 7/8" coated KOOKS LTH's without cats and Generation III Fusion EXTREMES. I definitely do not see any blue smoke. For me, few things are as exciting as ripping through the gears with my MGW short throw shifter and SCREAMING Billy Boat exhaust.
2007 with 9,600 miles. Halltech Super Bee MF 103, 1 7/8" coated KOOKS LTH's without cats and Generation III Fusion EXTREMES.
I definitely do not see any blue smoke. For me, few things are as exciting as ripping through the gears with my MGW short throw shifter and SCREAMING Billy Boat exhaust. 
11-11-2012, 07:24 PM
#12
Team Owner
Member Since: Apr 2001
Location: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
Posts: 26,714
Received 584 Likes
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St. Jude Donor '06
Nice, that should give the OP a little confidence along with this thread.
http://forums.corvetteforum.com/c6-z...eage-mods.html
along with this thread. http://forums.corvetteforum.com/c6-z...eage-mods.html
Last edited by Mopar Jimmy; 11-12-2012 at 01:41 AM.
11-11-2012, 07:36 PM
#14
Le Mans Master
11-12-2012, 09:08 AM
#16
2009, 34K miles, dropped valve. Warranty replacement, 400 miles later heads replaced due to excessive guide wear. Replacement motor had a September 12 build date.
11-12-2012, 09:26 AM
#18
Melting Slicks
Member Since: Dec 2009
Location: Smallingerland Friesland, Netherlands
Posts: 3,421
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No problems (yet), with my 20K mls 2006 LS7 engine, built by Greg Jones. My engine is stock internally, no tune.
Like many, I have my concerns about the valve guides though. For that reason, I am considering WCCH heads and valvetrain upgrades as soon as I can afford those.
External mods are Melrose Smoothflow long tube headers, a Vararam CAI, a FAST LSXr intake manifold, an ARE Stage 3 dry sump system, a Meziere electrical water pump, and an ATI harmonic balancer.
Like many, I have my concerns about the valve guides though. For that reason, I am considering WCCH heads and valvetrain upgrades as soon as I can afford those.
External mods are Melrose Smoothflow long tube headers, a Vararam CAI, a FAST LSXr intake manifold, an ARE Stage 3 dry sump system, a Meziere electrical water pump, and an ATI harmonic balancer.
11-12-2012, 09:28 AM
#19
Team Owner
2009 with 24,000 miles and no problems.
