[shawn]

hi, i found a 67 mustang for sale, the ad said that the gears of been changed out to a lower ratio for more power. it has been set up for racing. then the part i don't understand, it said it has a bump shifter installed, i don't know what this is? what is a bump shifter (the car is an automatic) please help

 

[roch]

The shifter can be changed, but as the other answer said, it is a shifter which allows you to put the car in first gear (all the way down towards you) and as you accelerate and want to upshift, you just "bump" the shifter handle forward allowing the transmission to shitf into the next higher gear. If it is a 3 speed, then you would "bump" it twice to reach 3rd gear.

Usually these are used for drag racing type setups. You can place it in "drive" (depending on how the tranny was built) and it will shift like a normal automatic.

If you want to show off, then pull the shifter handle all the way down towards you into first gear, mash the gas and bump the shifter foward for the next gear when you reach shifting RPM. Same for the 2nd to 3rd gear shift.

Have fun and don't wreck your car, those are getting expensive and hard to find!

 

[shawn]

A bump shifter, is a automatic transmission floor shift , you bump the shift up to for foward , and bump the shift downward
to gear down