Favorite gear ratio for street car

Wvbuzzmaster said

Ya, I am aware a lot of factors involved in this. Running the 284/484 cam with a 727 automatic. If my 4.10 was ok I would run it but since I have to replace it gives me this opportunity to either stick at 4.10 or go to a 3.91. Not sure 3.73 is aggressive enough for the way I want the car to feel when getting into the throttle but I know the 4.10 does. I also know like 72blunblu stated all my rpm calcs don’t account for converter slip. This is the main reason im considering going to 3.91 given that i may want to run some highway and know thats a couple hundred more rpm higher if accounting for converter slip.

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I think you have answered your own question. You could live with 4.10 (lots cant), and like the idea of 3.91. So, go with 3.91!
I used a roadrunner with factory 4.10s as a daily driver, work commute car for years, and it was tolerable because of a quiet factory exhaust. Most that dont like that much gear, dont like it because of too much noise.
I have 3.91 on a locker in my bracket/street car, cause it was just as quick as with the 4.10 and 4.56 that i used to have in it.
I have 3.50s in a nine in my other car, for potential nitrous use, to avoid running out of rpm at the track. If a car picks up 10 mph or more from nitrous, (very easy to do),too much gear can be really bad.