SoCal-s130 Posted January 13, 2007 Share Posted January 13, 2007 My speedometer is 5mph ahead and I was wondering if anyone knows how to fix this? Quote Link to comment Share on other sites More sharing options...
Dtsnlvrs Posted January 14, 2007 Share Posted January 14, 2007 What rear-end ratio do you have and what is your tire size? Quote Link to comment Share on other sites More sharing options...
steveosupremeo Posted January 14, 2007 Share Posted January 14, 2007 mine was like that on my 77, i verified it had a 3.54 and a 17 tooth cog, running 225/60R14 in the rear, just put an 18 tooth cog in there and it was all good, just slowed it down a little. Quote Link to comment Share on other sites More sharing options...
rdsk8ter Posted January 14, 2007 Share Posted January 14, 2007 is it 5mph through all speeds my guess is it changes correct? Quote Link to comment Share on other sites More sharing options...
Guest 280ZForce Posted January 15, 2007 Share Posted January 15, 2007 What rear-end ratio do you have and what is your tire size? he has a stock rear end on his 82 280zx, i believe it is a 3.545 open r200 w/ stock 82 5-speed. Tires and rims are stock 14" 6 spokes as well. tire size not sure, but stock size. Quote Link to comment Share on other sites More sharing options...
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