Usable power for the street?

pishta said
My guess is 3.23 or 3.55 gears but if you got 67 "S" you may have 3.91 SG gears

Just read your post. 2.76 or 2.93...terrible 273 gears! Get some 3.55's and then make your motor decision. 273/4 is a beloved motor, they like to rev but are soft down low but a 4sp will make up for that.

And this is where this thread should end. Going from 2.73 to 3:55 will be a noticeable difference. However I’ll chime in for the OP and say with a small block 350-450 hp is just fine on the street. Mine makes 415 hp and 430 ft lbs and cruises just fine.