just put 3.55 gears in rear end FORD can not calibrate speedometer. whats next
J jako · Registered Joined Dec 24, 2007 · 3 Posts Discussion Starter • #1 • May 6, 2008 just put 3.55 gears in rear end FORD can not calibrate speedometer. whats next
R RandyStinchcomb · Guest Joined Jan 1, 1970 · 0 Posts #2 • May 6, 2008 speed-cal from Dallas Mustang is your best-bet....