383 tunnel ram set up

Some where around here I have a thread titled something like
Fooling around with dual quads where there a pair of 600AFB's on a old Edelbrock topping a 360. It's better to error on the small side with dual 4bbl.'s.

The smaller the carbs, the numerically lower the gear ratio can be.
If for example, you find that you can use a pair of Holley 390's, you could run with something as low as 3.23's.