Hi there,

I'll be puttin a set of 4.10's in my truck in the spring and need to find a way to correct the speedometer for it. how can this be done? any ideas?

Thank you,
Kyle

 

its my understanding that the speed sensor reads the revolution of the tone ring on the ring gear - which is directly attached to the axles, wheels, and tires. and that changing gear ratios has no effect on speedo, but changing tire and/or wheel sizes does. that's why the hypertec speedo correction only asks one question.. what is your tire diameter.
good luck on the 4.10's, i think you will really like them.

 

you will love the 4.10 i went from 3.55 to the 4.10 and what a difference. speedo is not off but the rpm are 300 difference now. also becarefull in the rain. i had to learn how to drive again because evey traffic light or stop sign i would come off the line spinning. so easy on the take off until you get use to them.

 

This is something I want to do also. Havent really looked into it too much. Just curious of a ballpark of how much it will cost, where should I get it done at, and do I need to buy the gears then take it somewhere or would the shop that I get it done at have all the parts?

 

i got a set of Richmond Sportsman gears from summit at about $190, plus a cross chaft $40, plus the install kit $125..plus install, probabaly somewhere between 200-400.

 

I'd say closer to $400-$450 with installation. Check with Sam atSoCalDakota.com He has gears with the install kit as a package that might save you some money.

 

SoCal's only got gears for 9.25 rear ends no 8.25's

 

Aaaaah

 

Make sure you buy a decent brand of gears. I bought Motive and haven't had any problems. It costed me around $900-1000 for both gear sets/auburn posi unit. I had a friend install them so labor was pretty much FREE! I got my setup from www.nationaldrivetrain.com but I think www.ringpinion.comis probably cheaper.

 

check here. http://www.performanceoffroadcenter.com/