hello.
I wouldn't go with an autozone engine if I were you. if you have never delt with the purchase of an engine before, then you most def will run into alot of un expected expences.

my example is fact . just call you'r local autozone they will tell you, and if they say they don't know anything about the warrenty details then hang up the phone.

in my experience with engines, in order for them to honer any warrenty claims.

1st you must show you have replaced all cooling system with NEW /not used components.
plus belts and hoses.

2nd if for some reason the reconditioned engine you bought ever laid down on you and you had to get it pulled out for autozone to stand good on the warrenty. it doesn't cover ANY amount of money you paid for labor or other install parts. thats you'r loss

3rd 99% of the time if you were to take a defected engine back to them they will tell you that it was you'r falt it went bad.

like I said .it will be your loss, not mine or anyone on this web site.s just you and your money, make a choice but think first.

I used to work for them back in 1996 . I worked with autozone here in my town for 4 years. and every single person that bought an engine from us in some way or some how got the shaft. that was one of the many reasons why I had quit working there. I couldnt face the people on the streets knowing that I was partly responsible.

do all the research you can , call all the local shops and ask who do they buy from.

my suggestion would be to go with a NEW GM engine. call you'r local gm parts dept. and ask for the crate engines.

if you can spend a little extra cash you could get a performance crate engine . most if not all are ballanced and dyno'd with a 3 yr 36k mile warrenty.

good luck I hope you make a wise choise.