Quote:
39 Hp up top but look at the torque advantage of the small tubes at 3900 rpm  that's 67 Hp in favor of the small tubes! A heavy combo with the right gear and vert probably could et as well or better even if the top end mph wound up lower.
All out race car big headers no doubt....
Good point for a street car with very little stall speed. But in a good street/strip or race car with a converter stall near torque peak, the bigger/shorter headers made the same or more power/tq from 4300 on up. The big headers didn't even lose torque at 4500 rpm (torque peak of both).
| 
