>I just purchased a 305 engine privately. The seller states it is from an 86
>Caprice. I heard there was a boost in HP from 85 to 86 (150 to 170); How can
>I tell the year and is any real difference?
The lowly LG4 305 was around 150HP give or take a few depending if it had an electric cooling fan. I think GM started installing the L69 heads which gave it 170HP but I think that was more towards the late 80's.