OK, let's go at this from a different angle. How does the 670 compare with the 3310, with the exception, of course, of cfm ratings? Since I have both (the 3310 needs refreshing), it would be greatly appreciated if I had some opinions of which would be better and why. I'm not opposed to putting some money into the 3310 if it would be the better carb for my application. Strictly a street driven car.

This is on a 70 Duster, with a 340, .030 over, with stock hp manifolds, an Air Gap intake, XE268 cam, and an A833 tranny. Also, a 3.91 geared 8.75 rear diff.

TIA!!!