Hey guys time to fess up. Yanked ole reliable out of the car for the last time. After the fiasco with trying to keep the big hammer together I had to make a big decision. Put my so called back up motor in, stock bottom end late model 500 with ported heads and a procad grind. Thing is dead nuts reliable at probably 500-550 horse but just isn't fast enough anymore. It did go 11.80s on pump gas in a 3800 lb ride. Kicked around the thought of going with a blue print big chevy but ended up jumping on the LS band wagon. Bought an 06 5.3 out of a Tahoe. Stock bottom end (has better gen 4 rods) with 60K on it. Completely stock other than pulling pistons to open the ring gaps up. Pac 1218 valve springs and a JFR 218/218, .590 lift 112 lsa turbo cam. T4 billet S480 83x75 straight from china, 80 lb deka injectors, 93 pump/ water meth, 4" air to air intercooler, 3 bar map tuned in open loop speed density stock computer with hp tuners software. Should pretty easily make 700-750 wheel on 20 lbs and run mid to bottom 9s. I am waiting on my custom PTC converter to show up and need to re-work the factory harness yet. Should be up and running in the next couple weeks. Love my caddy's but it cost a small fortune to go fast and even when you get them fast anything much over 600 hp seems to be on borrowed time. I have about 5K total investment in the turbo ls swap and if I get greedy, turn it up to the moon and scatter it, another junk yard motor is $400- $600 bucks!