I spent nearly 3 weeks buried in my laptop trying to put all the info together to do this swap. Although the info is all over the intrawebs, it seemed many questions were still unanswered and part numbers left out when I needed them. I also spent a good amount of time finding the best prices for the parts I needed. I know most of you don't want to read a book but I cant tell you how many times I wish things weren't written so vague. So in this thread I will do my best to give you everything I learned in great detail. OK so my 95 Tahoe had a 383 TBI Stroker that I was never able to properly tune. I did an NV4500 conversion a couple years back. The truck sports a 12" lift with a 14 bolt rear. Its only summer driven and got such poor fuel mileage with the 383 that I barely drove it. I was on vacation 160 miles from home towing my bike on the back of a trailer when piston #7 blew off the rod and the write pin breached the water jacket. After taking some time to learn about the numerous advancements made in the LS engines, It was pretty much a no brainer to go this route. As I am writing this header, the truck is in the shop having the exhaust tied together and the LQ4 is done. Here is a pic I took nearly 15 minutes before the engine failure while in NH. The 383's last uncompleted voyage.