I have been reading up on 304's trying to get my ducks to line up. My Jeep is an 80 model, but during the cleaning, I uncovered a re-manufactured sticker and an emblem painted on the block (4-star Engine builders) I think. (It's hard to read now) I am not sure now if this is the original engine 1980 or if the 304 is the pre '80 version? I am going to replace all gaskets etc when I button it back up, and the gasket kits seem to be listed as 1966-1979 and 1980-81. How can I tell which 304 I got?
I can provide pics, but was just wondering if there were tell-tale markings?
from what I've read there were 2 version of the 304, better version (more HP) was available up to 79, then the 80 and 81 version was a dog. I am looking to find out how to tell the difference. Markings, serial number, etc?
and my jeep originally came with a 258, code C, so its definitely not the original. One mystery left...the 304's that "jeep" put out (80-81) are not rated as high on HP. I wonder if it's just the smog junk. Which brings me to a different question.... (and maybe a new thread) What SMOG junk can be eliminated without sacrificing reliability?