If it were me:
Personally I like a tight rear, 4:11 or 3:90's.
First, I would want to know what is the ideal power curve for this motor, ideal, max hp, and torque, RPM's, etc. Chevy can give you that. I would work everything toward it.
Second, What size tires am I running? How about a taller tire and 16 inch rims for the six lugs are everywhere. I personally would shoot for 31" tall.
Third, I would go for a different tranny. One with an OD. Can take advantage of the 4:11 on take off and cruising on highway OD would run less than 1:1, maybe .72'ish. This should put my 70 MPH RPM at 2200 or there abouts.
If I have to downshift to pass a car I would consider more and progressive carboration.
Cavebull
