Replacement engine choices.

[What?]

You'll be happy to go GM Crate, can't go wrong.

 

[Rob7233]

Keep in mind that the GM warranty is MUCH shorter if you're not buying the "correct" engine for your vehicle.

For example, guy wanted to stuff a "medium-duty" Vortec 5.7L into his K1500. This gets him 4-bolt mains, and maybe a forged crank. But since the "Medium-duty" engine isn't the recommended unit for a light-duty truck, the warranty goes from 3 years/36K miles to 1 year, 12K miles.

 

[Rob7233]

I was told as of last year all the new GM crate engines were now 4 bolt mains. However, you are correct in stating installing a non - oem recommend replacement will result in a reduction of warranty term. It was hard to get anyone to openly admit that. It wasn't until I called a local GM dealer and spoke to someone at the parts counter to openly inform me of their policy. Additionally, he didn't even have an updated or superceded parts number for a replacement long block. I had to take the original 1997 OEM # and some internet research to confirm the current GM recommended and (approved) engine replacement part #.