rapter34
07-28-2008, 08:03 AM
Ok so I just got done fixing my speedometer that has been off becasue of, what I thought was, the previous owner putting differnt tires on. now I have been putting this off and between the time it was off in the first place I have gotten a 9" with 4.11's so that was another thing to fix. I got my preditor and inputed all the right data. guess what, it was more off that before. I dink around with it and finnaly get the right seeting! now I have Nittro 555r's with 315 35 17R and a 9" with 4.11's. the right setting was 275 40 R17 with 2.73 :dunno: The only thing I can think of is that it has something to do with the transmission becasue he swapped the stock one out for this one. http://www.fbodymotorsports.com/inc/sdetail/10350 So don't ask me how it all worked out but i have speed tested it next to a freashly calibrated speedo and it is right on the tick. I'm just glad it works now, and boy do the numbers go by fast.