Any inherent troubles with the new C7 engine as of yet? My tuner feels the
valves are junk.

 

The valves are "junk?" That's real specific from your tuner. If that's the best he can do I'd find another tuner.

There have been a few reports of spun bearings and broken connecting rods, but those are a handful out of over 37,000 on the road. I've not heard of any dropped valves like some of the C6 Z06s had.

 

That's reassuring. Considering supercharging and don't want to have to rebuild prematurely

 

So your tuner took off a head--pulled a valve--looked at the valve job and weighed it? WTF=

 

Don’t think there are any significant LT1 engine issues out there.

Don’t want to risk reduced engine life? Don’t supercharge/turbocharge. The ZO6 LT4 has significant durability upgrades to cope with the additional stress of supercharging. Think the factory engineers know what they’re doing.

So, if you go with forced induction you loose the warranty and should not complain if things don’t go well. Don

 

Exactly

 

Lest anyone think I’m just dumping on performance enhancements, I’m certainly not. Too much horsepower is just about right. More power to those who want to go there.

My C7 is not a track car nor will it see the dragstrips, I just value reliability so personally, won’t be going to forced induction. Don

 

I agree how can a tuner criticize the valves when he is simply doing a tune on most likely a stockish engine--- without looking at them by removing the heads--- I would find another tuner--either he is jealous on your new C7 or has some other agenda to bad mouth new technology and GM !!
As mentioned the only engine failures I've read about have come from broken rods or spun thrust bearings---and as it worked out these were NOT caused by bad engine parts but from overheating A6 tramsmissions which take out the thrust bearings--GM is tryning to address the overheating trannys with adding another trans cooler which seems to be the delay on the new Z06 8 speed auto----I didn't wait--I already had a custom deep trans pan fabricated as well as adding a B&M 10x14 trans cooler w/fan located beneath the rear deck lid floor---easy fix trans now neber gets over 180* where before after 1/2 hour in city traffic it would spike to 230*

 

Good point. I'll just say he is a well known local engine builder. His work is very well respected in our area. Has a reputation for building reliable and fast engines.

 

Good Info, is this what GM concluded for the few engines that have blown?

 

No not officially No one including Ford Dodge or GM will ever admit failures directly--LOL But info has leaked out and tests have been done by independent companies-- results can be found online if you look hard enough---

 

post the links since you already looked hard enough.

 

Ok here is a link I found online---He is obviously a GM and corvette hater !!! Seams they compare mostly Dodges vs the new C7 so suspect this is propaganda written by Dodge to belittle the C7
I bleed chevy orange in my veins and was quite shocked by the hatred-----However if you take his observations and research with a grain of salt there may be some fire where there is smoke--He even makes personal knocks against Tadge which to me is dirty press
There are about 20-25 separate articles written all about the C7 from bumper to bumber--all bad !! There are about 5 concerning overheating A6 and A8 transmissions that have caused failed engines
Here is the link---If you click on the right on "ARCHIVES" you can see all the articles----The ones about the trannys start about Sept 20th
Would like to hear from others about this slam o the C7
PS: I know that many of his articles are just plain LIES----
For example that there are 2000 unsold C7's about---when I know from my purchase it is very difficult to find one---Many other claims are simply ridiculous !!!

http://corvettec7fiasco.blogspot.com...max-results=50

 

actually that's the only one. and the guy seems a little on the unstable side....but for that one C7 link have you compared with the 911? now those are issues....check YouTube. it's almost comical unless you own one.

if you can extrapolate using one example and apply it to 40k corvettes you've never seen and maybe 10 that have had a problem of some sort, then more power to you.

as for me, not a chance. that link is tired, old, and as you said, biased. it's crap.

any other links showing these leaks of failures you speak of?

 

That link is to a guy who was banned from CF and has an ax to grind. He as quite the knucklehead while he was here.

 

I can tell you for a fact my head porter has a real issue with the valves in the LT1 heads; not with the material but the actual machining of them being out of round and not seating properly! Now he absolutely loves the heads and has mine flowing over 400CFM on a bench that the OEM only flowed 290CFM!

 

That was my understanding as well. Only doing ARH mids.

 

I believe that the same company that machined the infamous LS7 heads is machining the LT1 heads.

 

ls motors had the same situation with the factory valve jobs.....every engine builder I have talked to has said, even if you don't want to port the heads, we still want to go through them based on the last 10 years of our experience with the LS motors.

it's not something that affects everyone all the time, but if you want it to be right, then you have to do it.

 

FYI PeterMJ was a notorious troll on the Forums before C7 release, talking about how awful it was with no AWD or DCT and that it was a complete failure in all ways, so I wouldn't take much of his research as gospel.