V8 s2000 - Baby steps
06-26-2019, 10:52 AM
#21
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There was a defect in the casting. Porosity issue (entrapped air bubbles in the liquid metal while it was pouring into the mold). Id did not affect every 706 head. I know the 2004 castech 706 head was affected (ask me how, lol). I think it was isolated to castech AND either 03/04 or 04/05. The heads will develop a crack and leak coolant into the combustion chamber. I had to pull mine at around 110K miles for a head replacement. Different year, non-castech, truck still on the road at 250K now. different owner too.
hope that answers what you were asking
hope that answers what you were asking
06-26-2019, 11:35 AM
#22
On The Tree
There was a defect in the casting. Porosity issue (entrapped air bubbles in the liquid metal while it was pouring into the mold). Id did not affect every 706 head. I know the 2004 castech 706 head was affected (ask me how, lol). I think it was isolated to castech AND either 03/04 or 04/05. The heads will develop a crack and leak coolant into the combustion chamber. I had to pull mine at around 110K miles for a head replacement. Different year, non-castech, truck still on the road at 250K now. different owner too.
hope that answers what you were asking
hope that answers what you were asking
This was perfect. I found the TSB. Thank you very much!
Here is a link to the TSB http://ww2.justanswer.com/uploads/Bl...t_loss_5.3.pdf
07-01-2019, 01:52 AM
#23
What's wrong with VVT? Seems like it would be a nice to thing to have.
Coming from the Subaru world, I'm a little disappointed that my Corvette doesn't have a cam timing table to tinker with.
Coming from the Subaru world, I'm a little disappointed that my Corvette doesn't have a cam timing table to tinker with.
07-01-2019, 03:08 PM
#24
On The Tree
If it was my 100% stock DD, I would be fine with it. If its a performance car or swap, its done away with or never offered with it.
07-01-2019, 04:33 PM
#25
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VVT rocks. GM offers it on all of the big LT performers, such as the LT1, LT4, etc. I ran it on my recent ls2 build on my Chevelle and it’s legit. If set up properly, even in a high rpm build, it works well. If you don’t understand the tech, and it’s not set up properly, bad things can happen quickly.