said by Kearnstd:
not really shocked at all here.
if I remember right, the 4.3 Vortec is derived from the 5.7L 350cu engine. And the 350 is known to be a rock solid motor.
4.3L is essentially the 5.7L minus two cylinders.
I traded my 2000 Blazer 4.3L auto w/ 4x4 last April, it had 185K at the time ... engine ran beautifully, with the exception of an alternator and the remote oil filter assembly, never once had do "under hood" repairs in the ~70K miles and 4 years I owned it... everything was suspension, wheel bearings/hubs or brakes.
...only hiccup in ownership was the whole averaging 17-18MPG thing
... I just couldn't tolerate it any longer with me driving 15-20K miles per year... I was using about 1000G of gas per year, at $3.50 on average I was about $300/mo in fuel.
New (to me) ride is an 03 Civic for past 9 months. I averaged 36MPG in summer and now 33MPG in winter. It's a 5-spd with a 1.7L engine. Fuel costs are literally less than half now... the extra $150-170/mo comes in handy