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So I got my hands on a 2006 Trailblazer SS for its engine. I have wanted to do the swap for years now but life seemed to get in the way. The blazer was an abandoned project from the previous owner who had just rebuilt the engine (zero miles), removed the AWD (welded the transfer case....) but then gave up on it.
The truck seems to run OK but is throwing a cam position senor code (minus the hard start). He did mention that he put a Corvette cam in it. Not sure if he added the wrong cam gear (if that's even an option?) or if there is programming that needs to be done. As I am a ways out on installing the LS2 I would kind of like to drive the crap out of the blazer for the summer and then pull the engine next winter. The blazer is in decent shape overall.
Question is: is there any way to confirm what gear is on there now without tearing the front of the engine off? I have the sensor out now (appears to be brand new) and have ordered a new one. Maybe taking a video through the hole... I am still learning about these LS engines so any assistance would be greatly appreciated.
Not sure how you could put the wrong cam gear on it and have it run at all. My guess is since it's had a cam swap, it needs a good tune. Nice looking Nova from what I can see of it!
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LS2 into my 1971 Nova 
