[numb_inside]

I own a 92 jimmy with a 4.3 vortec and it has 150k on it. How long do these motors usually last?

 

[streettrucks96]

it depends on how it was driven and anything done to the motor. like nos. or anything.

but i would say in about 50,000 more is a good time to do a engine rebiuld.

because i also have a 89 jimmy 4.3 tbi diefferent but similar.
and it had 225k on it and got an engine rebiuld. and i paid about $3300 to fix it up. and since then it's runs like new again to me.