GM's 4.3-liter Vortec 4300 V6 was derived from the 350 small-block V8, sharing bore, stroke, and parts to cut costs and ...

For more than 35 years, GM's base truck engine was a 4.3 liter V6 owners could fix in the driveway. Today it's a 2.7 liter ...

In their later years, Vortec engines have fallen victim to some downsides, like Active Fuel Management, an aggressive thirst for oil, and engine knocking. But back when they were brand-new, these ...

In the late 1990s, General Motors faced a massive engineering crisis. The legendary, iron-block 4.3-liter Vortec V6 –- essentially a small-block Chevy sans two cylinders -– was a bulletproof workhorse ...