Engine Replacement

You're opening a real can of worms by changing year and size. I just read a reply where even the intake manifold and coolant temperature sensor where different from one year to the next. Your Engine Computer, wiring harness, injectors, and just about everything in the emissions system will be different. Also consider a larger radiator and stronger springs. GM is famous for changing things from one year to the next. To prove it to yourself, go to www. Rockauto. Com and look up the part numbers for parts for different years and engine sizes. You're looking to add way too many variables to try to figure out why the engine won't run right and the brakes don't perform properly.