Speedo Gearing - Team Camaro Tech
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post #1 of 3 (permalink) Old Oct 27th, 99, 01:22 PM Thread Starter
Join Date: Mar 1999
Location: San Diego
Posts: 5
My car is equipped with a TH400 tranny and I just replaced my rear end which was originally a 10-bolt 3.55:1 limited slip with a 12 bolt 3.73:1 posi. Of course my speedometer is now out of whack, so does anyone know specifically how I can at least get it close to what it was before? I have a TH400 tranny. (I didn't change the tires or anything else.) Thanks Gary
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post #2 of 3 (permalink) Old Oct 27th, 99, 05:54 PM
Senior Tech
Join Date: Aug 1998
Location: Ft Wayne In.
Posts: 305
Take the gear out of the tranny, and count the teeth. Go to your local dealer and get a gear that has one or two less teeth. This will get you close. The 75 and older parts book has a chart for speedo gears, but with the advent of computer parts programming, your dealer might not have this catalog.
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post #3 of 3 (permalink) Old Oct 28th, 99, 04:52 AM Thread Starter
Join Date: Mar 1999
Location: San Diego
Posts: 5
Dave- Thanks for the reply, just what I was looking for! Have a great one
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