What gear ratio for a street car w/occasional track use?

For me...3.55 gears just don't have it for the strip... And 391 gears ,though still mild, are too much for the highway for most people.

Imo 3.73's are it when it comes to a REAL dual purpose car with a 1+1 final drive.

I ran a 340 with 3.23, 3.55, 3.91, 3.73 and out of all of them the 3.73 was the most versatile gear. 3.91 hauled *** 3.55 was slouchy in the midrange and low. 3.23 was a dog...till you got to 70 mph.

Doesnt seem like much diff between the 3.55 & 3.73... but there is.