Hey Ken,
The Big Block Cobras (not all of them mind you) can pull the same amount of HP and Torque as the small block...However, with the small block being blown and injected, the power band will behave differently...The rear gear set your using will also play a major factor in getting the power to the pavement, as it acts as the torque multiplier in this equation........Put the 3:27 gear set in, I think you'll find it a far better combination for this particular Cobra............
Yours In Fords,
Bill S.
PS: The wife liked your C2, want to trade for a 74 TR6 driver class car
........