[Randy (Randys72)]

im want to know which gears are better to run i have a 360 w cam 727 trans i need to change rear to a possi rear but undecided on gears i want to utilize the horsepower of the engine but not go too crazy -i want it to be streetable as possible--should i go with the 373s

[Dave-R (Roppa440)]

The correct gear depends on what you want to do with the car, how far you drive it, if you race it, how tall your tyres are, where your engine makes peak torque, or where your engine makes peak power (depending on what you want from the car).

Use this calculator to see the effects of gears and tire size on your speed in each gear.
http://www.challenger440.pwp.blueyonder. co.uk/cgi-bin/disc/show.cgi?tpc=6&post=1 0093#POST10093

Bear in mind that if you want good gas mileage you will want to drive at the rpm your engine makes peak torque (your cam manufacturer should be able to give you this info). If you want best quarter mile ET select a gear that will have you crossing the finish line just after peak power (as long as you shifted just past peak power in every gear on the run).