Here is an '85 roller short block with the roller cam. 9.2:1 cr with the factory flat top pistons.
Too bad it still doesn't have the factory roller cam and lifters yet, they do well with the Edelbrock 1406 4bbl for performance just as they are with the 302 heads. Can use the Mr. Gasket .028 ths. head gaskets with the stock layout for a little more compression.
Same goes for the '89 - '91 roller TBI 318, with the 302 heads. Only thing is you need the cam end adapter to run the manual fuel pump eccentric. Other than that great with the 4 bbl setup, not a lot of goofing around to get it going.