I want to swap out stock gears for low end gears. Something that will get me a little quicker off the line. Any suggestions?

 

What's in it now? Ford 9" or dana/spicer rear end? Current gear ratio? The ford 9" is more common and is easier to swap gears.

 

Most likely it's a 9". I would get another 3rd member and get it set up and swap them out when you're ready to reduce down time. If it's the original 9" it's also open, so now would be a good time to upgrade to either a traction lock or a torque sensing rear diff.

 

Its a 9 inch rear with 307 or 310s

 

Could be: 3.00-1 or 3.25-1.

AXLE code stamped on the Warranty Plate, post what it is.

 

Is this it...

 

Axle code "08" would be for an open (single track) 28-spline differential with 3.50:1 gears.