Ok, I've been attempting to remember what H.O. - High Output actually means on the Third gens. I used to know it a while back but i can't find it anywhere n the book or internet so i'll ask the experts.

The "HO" engine was designated with the code L69. It was the more powerful version of the LG4 carbed engine.

Of course you have to realize in the smog era of the mid 1980's "HO" meant a whopping 180hp. Or is it 190? The G-body L69s were 180. Either way...great then, pretty laughable now.

https://www.thirdgen.org/forums/faq-...5-engines.html

Jamesc