3.23's to 3.42's, whats the diff?

[v6maro]

I know it will throw the speedo off, but by how much?
thanks
-Steve

[navyblue2000]

3.42/3.23 = 1.058
you're gonna read about 6% fast by that idea...but the best thing to do would be to go to... www.fbody.com/calc.htm and put in the gears and what not on the calculator and see how much it throws you off. won't be really bad, but the odometer will get screwy

[MustangEater8251]

on the road, its not a huge difference when looking at the speedo on the street. It reads faster then you are going, but I consider it a good thing, keeps my speed down.

tonight at the track at about the end of the track I glimpsed at my speedo it read 89-90, but the sliop said I trapped 84-85 thoughout the night.

personally I do not think its worth a reprograming, for that alone, if you do ohter stuff go for it.

[MustangEater8251]

another thing on a trip that I recorded to be exactly 205 miles more then 3 times, with my stok gears reads like 220 miles on my tripometer.