Originally Posted by
0-TJ-0
My understanding of the requirements is that if the engine and vehicle are manufactured after 1987.. as long as you have all the standard emission controls in place you're good to go. It will only become an issue if you cross over the major adr revision dates.. ie.1972-76, 1976-86, 1986 to present day.
So.. you can't put a "leaded" engine in a post '86 car but you could put an ls in pretty well anything built after '86. You just need to have the cats and such installed.
Edit: Actually on those rules you could put an ls in pretty much anything. A motor that complies with current adr's (anything built after '86) could be an option for any vehicle. There's obviously other requirements you need to comply with, but my point is "the engine must be newer than the car" is a bit general and not necessarily correct.
Edit: Edit: Didn't mean to sound like a d*ck about it haha.. just how I understand the rules.