According to a 52 Motors Manual

228 - 183 fp of tq at 1000 RPM & 95 hp @ 3200 RPM
248 - 202 fp of tq at 1000 RPM & 100 hp @ 3100
270 - 222 fp of tq at 1000 RPM & 104 hp @ 3000
302 - 262 fp of tq at 1200 RPM & 156 hp @ 3600

All of the above have the same block just different bore & stroke.