May not be an 86 engine, I looked in the spark plug holes when I bought it and it has the eyebrows on the piston tops, I learned to look for those before, I was told that they thought it was an 86 motor but it sat under the bench wraped up for years so memory may be fuzzy. I'm putting it on a lift soon to do some maintenance and insection so I will look for a date code then. I need to pull the intake and the timing cover to fix leaks, thats why I asked about the cam, just one more step to change it although I'm pretty satisfied with the stocker, what about 1.7's on a stock cam? I like sneeky hp, hard to hide a blower.