PDA

View Full Version : speed with stock size gears and 23tooth speedo gear



92sclikenew
05-13-2011, 11:18 PM
well i would like to know how far off would my speedo be with the speedo gear in the trans being for 3:73s but since they broke i threw a stock set back in the rear(3:27).i think its off by 5mph under but not sure?

thanks

RalphP
05-14-2011, 10:54 AM
well i would like to know how far off would my speedo be with the speedo gear in the trans being for 3:73s but since they broke i threw a stock set back in the rear(3:27).i think its off by 5mph under but not sure?

thanks

It should be off by 3.27/3.73 - or, according to my calc, about 12%.

(Or 3.73/3.27 - again, about 14%.)

If it says 100, you'll be doing about 114 actually, from what you describe.

(It's a percentage, not a fixed amount.)

RwP

92sclikenew
05-14-2011, 05:56 PM
It should be off by 3.27/3.73 - or, according to my calc, about 12%.

(Or 3.73/3.27 - again, about 14%.)

If it says 100, you'll be doing about 114 actually, from what you describe.

(It's a percentage, not a fixed amount.)

RwP

thanks.. i still have the stock speedo gear ill just reinstall it till i get my bigger gears back in.