If i got new gears such as 4.10's would that mess my speedo or tach up, or is it only for new tires that that would happen?

 

it will read completely off you'll have to buy a new speedo gear for the swap, and possibly have the speedo recalibrated just to make sure its completely accurate

 

i got a speedo recal from dallas mustang and its dead on

 

Thanks for the replies. Also, i assume i would have to have a shop put these gears in for me... how much money am i lookin at now and how long does it take to do this

 

It cost me $355 for the install but I also bought new roller bearings, seals and shims because I bought MD's used gears.

 

hmm.. if i were to put in a shift light, would i set the light right at the gauges redline, or swould it have to be different with the gears.. how about with stock gears, would i set the shift like to the redline? thanks!