Customer Returned This Cadillac Northstar L37 4.6L V8, How Many Things Can We Find Wrong?

Is this the first teardown video you've seen on this channel? There are over 110 more as I upload one a week every Saturday evening! Check out my other teardowns here: https://youtube.com/playlist?list=PLIYwo7JlrVQVg32JL-r4H7dfMxMqzWlVa

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I can't count the number of requests I've had for a Northstar engine on this channel. They are definitely not something I normally chase or try to buy, which is why it took 2 years to finally have one to teardown. I was at another yard buying some other cores and this was there, I guess it was the perfect place, perfect time. 
This is the 4.6L L37 from a 2002 Deville DTS with 155K miles. This engine was sold to a customer and returned without being installed. It was pretty evident that this engine wasn't a good candidate for installation as it started to come apart. I'm not a huge fan of these engines however they are pretty simple and easy to work on, which was surprising. This engine had many things working against it, but it likely still ran to some extent.

The Northstar family of engines came out for the 1993 model year, and was used until 2011. There were several iterations and displacements, a 4.0, 4.4, and a 4.6L. They even build a 3.5L V6 with the same architecture! They also made a supercharged version in the STS-V and the XLR-V. These engines were used in both FWD, AWD and RWD configurations. 

Really hope you enjoyed this teardown! As always, I love all of the comments, feedback and even the criticism. 

Catch you on the next one!

 -Eric