saplumr

The problem is no one knows the actual failure rate. No one ever hears about LS1,2 or 3 failures and those produced numbers dwarf the LS7, but we hear about that one. Like it or not that's the way it is. You always hear bad before good. Is it warranted..who knows.

C5Txfan

I kind of had my eye on a left over 60th anniversary at a local dealer ... but I'm a little hesitant after reading the issues with the LS7 ..

pmartjr

According to the Chevy engineers, at the height of the problem from 2008-2011, the failure rate was 6.5 units out of 1000. That is .0065%! If you read every Chicken Little post that chimes in on CF you would indeed swear that all are bound to fail. GM still provides a 100,000 mile five year warranty on the entire drivetrain. That includes the engine. Kind of like the LS2/3 crankshaft harmonic balancer/pulley. Do they really all fail? If you follow the posts on CF you would think so.

funz06

Don't let the few doomsday folks----and they are the same few that show up every time this old issue comes up----ruin your chance for some great enjoyment. Folks that have a 427 love it----and these are folks that have had ZO6's GS's, etc........ GM had a bulletin on this-------I seem to recall there was a problem with one sub-contractor and the problem was rectified back in 2011. This engine is the same one they are putting and showcasing for the the Camaro. The 1% figure mentioned INCLUDES THE KNOWN PROBLEM CASES THEY HAD WITH THE SUB-CONTRACTOR several years ago. For peace of mind, call around to several major corvette dealers and ask them if they have had any more problems with this engine than that of other corvettes----I did before I got my ZO6 and the 2 major ones I spoke with looked at me like I was crazy--they hadn't heard of "the" problem. I guess it is like sex, a few folks catch a STD, and some expect everyone should give up sex forever...................now, I am not saying cruising in the 427 is like sex, but..........

flange

I read as much on the ls7 as I could before buying. many of the dropped valve problems occurred on modified cars but not all. of the modded cars a bunch were tracked.

the issue is said to have been fixed, the issue in this post is the second I have heard of on things other than dropped valve. the first was also a bottom end, caused by a failed oil pressure bypass I think it was. so this is two ls7 bottom ends I have heard of.

yup, sky is falling, but so far not in my world. problems? sure. anyting is ubject to problems, but the old interweb magnifies them

GSRANDY

Personally I would prefer the new engine approach as opposed to one that has gone thru a major rebuilt, if it were even possible in your situation.

Documentation of the warranty replacement engine should resolve any concern relative to collector value in the distant future.

Best Wishes,

GSRANDY

Rupert pupkin

Never going to happen, unless your Z is the last 10 Zs in the world.

Have GM replace the motor, and call it a day. You have a warranty, and thats what theyre for.

Nope..No way to find out about dropped valves since either A.) a performance shop did the fix, B.) The owner fixed it themselves or C.) GM did the actual fix.

Oh and who ever said that the issue was in the 08-11...Thats wrong. Its on all 427's 06' to current years (maybe current years)

lordofwar

simple.get it fixed and trade it.you will never be happy with a new very exspense car that has had the motor replaced.i know I wouldn't.

joec

technically speaking he will take a hit since the car does not have the engine it was born with... doesn't matter how much paper work he has its not the original engine.... there are plenty of c2, c3's etc. with CE replacement blocks and they do not bring as much as those with original engines.... now that being said, IF he keeps the car till it's truly a collectible then I would push for a replacement car, which is doubtful at this point. Not a good situation for him other than the offer to replace the engine ...

red4twenty7

A MAN and I am right there with you, except I own a lousy red one, that I actually love and plan to drive for years to come.

PMD C6

I will be the first to admit, i watch scottsdale every january......probably bc its the dead of winter and nothing else is going on. The auction is a three ring circus, with all of the "charity" cars that they do, however i do enjoy looking at the cars and listening to the announcers. Some of them really know their stuff.

Kingspoke

Fair enough, I guess we chose our own poison(s)!

netacoma2003

I wonder if the "drive it like you stole it" theory vs the "pamper it" theory would cause these parts to seat and therefore wear correctly?

Silver 2008 C6

Hey Jack, you coming Sat.?
Harvey

gearbreaker

collectable, that's funny

you'll be dead and long gone before it might become collectable.

now you can just drive it and enjoy it like you should be doing anyway even in the rain.

ATC399

OP had 1 post..post a pic OP of your 427...LMMFAO..got to love the internet...Chicken little's came out in farce ooops force....

robertaj

I will gladly take your non matching numbers Z off your hands for half of what you paid for it ... actually maybe a bit less...

SharkbyteLT4

Just when you thought buying a 2013 will be free of the valve problem, now it seems you got to worry about this rod out of spec problem which is the oil pump to get clogged by the Ti shavings. One person in this thread and my local tuner here told me of 3 guys who just had their engine seized up in the last month or so. All less than 5k miles

red4twenty7

But it is the next best thing right Jim.
I love my 427 and I also have not ran into anyone with a LS7 that has had any problems, but anything mechanical can break at anytime.
It may also have something to do with how hard people drive their cars also.

funz06

I am curious------were all of the above four cars you alluded to 427's? And if so, were any of them either modified or tracked at all? Would your tuner be able to ask the 427 owners to post their experiences on the Forum, especially in the 427 threads in the 'sticky' section? Thanks.