btm24 Posted January 26, 2011 Share Posted January 26, 2011 Hey so now that I have my new front and rear axles almost in with a new gear ratio, what do I need to do to get my speedo to show the right speed? Also what will I need to do when I get 33" tires for it to show the righr speed? Thanks specs: I have a, 4.0 I6, 1989, auto, old gear ratio 3:55, new will be 4:10, tire size as of now 31" ( with the speedo being off by 5mp...ish) Thanks Brandon Link to comment Share on other sites More sharing options...
mnkyboy Posted January 26, 2011 Share Posted January 26, 2011 I would wait till your done and see how far off it is,you changed gears but your also going with bigger tires so they will cancel each other out a bit. Link to comment Share on other sites More sharing options...
ComancheKid45 Posted January 26, 2011 Share Posted January 26, 2011 Behold :D http://gojeep.willyshotrod.com/HowtoSpeedoGears.htm Link to comment Share on other sites More sharing options...
btm24 Posted January 26, 2011 Author Share Posted January 26, 2011 It may be a long wait untill I get the bigger tires but yeah thats true. And omg thank you! I have been looking for that post for months now thank you for getting it for me. Brandon Link to comment Share on other sites More sharing options...
deziped Posted January 26, 2011 Share Posted January 26, 2011 When your ready to swap in the correct speedo drive gear here is a source for the gear you need and it's not to far from you. Ive always got quick service from them. With the combo your going to run it looks like you might need the #37 white gear. http://www.transmissioncenter.org/speed ... d_jeep.htm Link to comment Share on other sites More sharing options...
btm24 Posted January 27, 2011 Author Share Posted January 27, 2011 OK thank you so much! ill keep that link in mind Brandon Link to comment Share on other sites More sharing options...
87Warrior Posted January 27, 2011 Share Posted January 27, 2011 I would just recommend learning how much your speedometer is off and live it it until you get the 33's. My Rubi's speedo is 12% fast, when I set cruise at 80 it is actually going just a shade over 70. With 4.10s and 33's my Rubi's speedo was right on the money :yes: Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now