When that engine came out I was an assistant service manager at the largest Chevy dealer in Richmond... I know better... We had customers who bought these and had them maintained at our dealership who went thru the nightmare of these engines... The injector pumps gave out on most of them at 25,000-30,000 miles... So we replaced them under warranty... The heads were next to go at 45,000-50,000 miles...
Then in 1981 when GM went to computers we had massive problems with "Check Engine" lights on some of the cars... There were some that were downright possessed... They'd set a code and we'd replace whatever the brain said to replace and have it back in the following day with the "Check Engine" light on??? We eventually figured out that the cars were lying to us so we had to do brain transplants on them...
Drove me crazy... Decided that GM was not for me and left and opened up a VeeDub repair shop... No brainer (pun intended)...