Keep in mind a lot can happen in 45 years or so. How many guys have built roller 302's into 347's? External casting codes don't tell that story. Pull the pan and look for the crank code (1U, 2U) if you really care. Don't see what difference it would make. The internals are the only thing specific to a 289 or 302, and they seem to be in place already.
Formerly of the Permanently Addicted...
Let it be known that I do not street race or condone that sort of thing
- unless the 'b@stard deserves it.
Someone takes his pants off and the rafters knock
Rock is dead they say
Long Live Rock!
67 conv. 289 4spd(mine), 67 coupe 289 Export(swmbo's)