They were around 85HP and 160 lb-ft of torque. I have a buddy that sold his 85 Ciera with 280k miles a few years back. It never gave him a lick of trouble and was still running great. Of course others know people that had their 4.3L die within 5 minutes of buying it. The opinions are all over the place.
I think they are fine if they are maintained (true for all diesels). You can't ignore them like a gas engine.
I found this on a pumped version.
http://a350diesel.tripod.com/v6fast.htmlhttp://www.gm-diesel.com/di...owthread.php?t=20692[This message has been edited by TK (edited 12-21-2009).]