Now what?! I just put new heads and cam on the Z06 a couple of weeks ago...and I was playing around on the road and looks like a shot a piston. Any suggestions? New bottom end or new pistons? DAMN IT!

 

Well if you didn't scar the walls you could get away with just pistons, but either way I would do the bottom end over pistons, rings, rod and main bearings, and oil pump.

Or just go the short block route, that you have new heads, it would be quicker that way.

 

Thanks!
Looks like I might go with the 402.

 

Go LS3 418 stroker

 

Is this a good one?

http://texas-speed.com/shop/item.asp...d=686&catid=20

My heads and cam are both from TSP.

 

what happened? U go lean? U have ryan retune for the heads i assume and what kind of power did you make

 

Yeah..they tuned it up and it was making 479 to the wheels. Kinda sucks it broke so fast...but I guess this is all just part of it.

 

im scared now maybe i shouldt go with a head a cam package

 

you change your cam out? what did you go with? and what heads?
nice numbers man! how many miles were on the motor and whats your symptoms that you think you took out the motor?

 

If you have doubts about the bottom end you shouldn't add power to the top, when you seal up the top, and the bottom is weak something has to give.

 

what can u do to the bottom??

 

Go with forged parts?

 

That is a good engine, my friend built a ls3 out of a 09 vette. It was a very good all motor build with a lot more left in it... He put a super conservative tune on it and made 551 to the ground. He has a stock manifold on it still also. It was also built to take a 150 shot on the aggresive tune... So basically it is capable of well over 650hp.

 

HPE did his in Houston Texas... I would definitely recommend them, they stand behind their work.

 

If he "holed" a piston or damaged a compression ring with a naturally aspirated application it was because the combustion temperature was more than likely way too high (at least on the aforementioned cylinder) which resulted in detonation. Some of the possible causes are: too much spark advance, poor cooling (cylinders 7&8 are notorious for this), lean condition, too high of a compression ratio on low octane fuel, piston weakened by fly-cutting. The stock LS6 bottom end can easily support the power produced by a well planned heads/cam set-up (assuming it is properly tuned). I would be very interested in seeing some pictures of the damaged piston.

 

Some very good points in this post... I will wait to hear from Bill what is found before I judge the situation.

 

That is why I run NGK TR6 Plugs... that and the nitrous...

 

 

http://www.ls1tech.com/forums/dynamo...t-90-90-a.html

 

Just don't go to his tuner and it'll be fine.