That old engine may be tougher than you think — if you treat it right.
Some Chevy engines you should avoid include the Vega 2.3L inline-4, the 5.3L AFM Vortec from 2007 to 2014, and the 6.2L L87 ...
It withstood years of overheating, enough to stretch head bolts and damage a coolant tank, and is still running as smoothly as it did two decades ago.
This V-6 is still being put in cars almost 30 years later.