its runnin great! prefect vacume and compression. just had to fix the oil leak the lt1's are famous for. but ive done a few mods and i think one thing thats expanding th elife of my engine is my manual cooling fan hi/lo switch. my temp hasent gone above the first hash mark ever since i installed it! if your intrested in one i'm selling them to lt1's for about 20 bucks. alot cheaper than the slp one and others. plus it has led's to tell you when your fans are running. its really sweet! but nothing major beside the oil leak with my engine. however ^.^; i forgot that the engine was replaces at 30,000 miles with a new lt1 (oil pump stoped working) so i almost have 70,000 n the engine and 10000 on the tranny