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"At this point I am leaning toward the turbo, 3.73 gears, and Th400. If she is well monitored and well maintained do you think the 6.2 will be long lived? Conservatively tuned of coarse" OD - sure, if you drive conservatively and don't try to drag race the corvettes, your rig should last a...

OD, no it is not my assertion that a moderately tuned 6.2 turbo is doomed to an early demise, as there are a substantial quantity of these units running the roads today and providing good service. The point I was trying to make was, GM did not design this engine to be turbo'd. And based on...

Been watching this thread closely. Respectfully, I must say it kinda reminds me of that old "Dallas" TV series with all the mind games. I decided to chime in because I don't believe the J-code 6.2 will support a turned-up turbo for very long. The cast crank and bottom-end structure wasn't...