appearance of a 340 vs. 360

I have had both the 360 & 340 in my race car.
Both built simular, the exception being Iron heads on the 340 & Alum. on the 360.
Compression ratio was comparable, the 360 had more cam than the 340, both solid.
The bottom line, not much difference in ET's
The 360 ran a best of 7.02 with a best 60ft of 1.46.
The 340 ran a best of 6.96 with a best 60ft of 1.48.