Visited with my engine block today....

sounds like my 305 cu inch "Trans Am" Javelin
the one made from a AMX (AMX is a Javelin with the rear end moved up a foot)
with a stretched front end Motor was behind the front axle) same wheel base as stock Javelin
Think early altered wheelbase funny cars
well anyway the 305 motors were made from 360 (4.060 bore ) blocks and said 360 on the side
ours was based on the "NASCAR" 360 block which was 4.250 bore
it also said 360 on the side