Help me decide!

A good way to compare cams is with the duration at .050 numbers.
The biggest performance killer on the 360 was the low compresion and the regular low duration cam. When they came with the 340's cam, it still sufered from low compresion.

The factory offered a E-58 (360) engine as a performance option. It came with the 340 cam as well as a double roller timing chain and windage tray.