81 Driven Gear Teeth?
08-17-2018, 04:53 PM
#1
Advanced
Thread Starter
81 Driven Gear Teeth?
Does anyone know how many teeth on a 1981 Automatic driven gear from the factory? Changing rear end from factory to 3:54 and will need to correct my speedometer. Thanks for the help.
08-17-2018, 04:59 PM
#2
Le Mans Master
Member Since: Aug 2017
Location: Cool Northern Michigan
Posts: 6,899
Received 2,125 Likes
on
1,632 Posts
You can't always trust what some book says is supposedly in there. Believe it or not, you can count the teeth yourself. With the speedo cable and bullet removed from the tranny, shine a flashlight into the tailshaft housing. Start counting teeth. Or, at least note the color of the gear, then look that up at Speedometer World.