I had a similar story. Wasn’t low miles, but clean 1 owner with EVERY SINGLE SERVICE done at the dealer. Flew in, drove 9 hours home. 6 months later, spun a rod bearing (the common TBSS killer). No wild driving, just cruising.
Found a “Hot Cam LS3” long block from a dealer. Installed the PCMofNC oil pickup relocation and a square port Escalade intake manifold, and everything else worked just fine! Spent $5,500 on parts, and sold the LS2 for $800 to someone who used it to rebuild. The warranty on the new engine gave me the piece of mind versus anything used or even built at a shop.
Good luck!
Found a “Hot Cam LS3” long block from a dealer. Installed the PCMofNC oil pickup relocation and a square port Escalade intake manifold, and everything else worked just fine! Spent $5,500 on parts, and sold the LS2 for $800 to someone who used it to rebuild. The warranty on the new engine gave me the piece of mind versus anything used or even built at a shop.
Good luck!