I have a 1978 pontiace firebird with 350 small block with 350 horse and 400 foot lbs tourque. I have a TH350 3 speed trans with 25.5 tires. I'm looking for a good street/strip rear end gear ratio. Something i can drive back and fourth to work and take to the strip on friday nights. I need something better than the 273 in it. before my engine upgrade to the current specs i was running mid 16's at the track with a stock 350. I need a good ratio that will work well with my current power and not eat me alive in gas and not sound like a air plane going down the road. I've thought about the 3:55 or 3:73 but thats just my unexpereinced guess. Any thoughts on the subject would help.