I really don't know - I want to say the Tahoe said around 200K when I pulled it. But it had a few leaking gaskets and made a huge mess. Shouldn't leak anymore though now that it's all resealed. I haven't fired it up yet to confirm though.
Short cuts can be expensive folks. But sometimes you get lucky. If you don't want to spend the money on the plates to cover the ports. How about tape. Also Easy off Oven cleaner Dollar general store is good stuff. But not for aluminum because it will look like crap after. As far as paint stick and last and not fade or dull EVER. Kbs Coatings is the💩
Absolutely. I put towels down each intake runner. Then when I'm done I turn the motor upside down and spin the crank a few times. After that I'll put motor oil in each cylinder and spin the crank a few times again.