Another speado gear regading 4.10s

[85MustGT]

I had the 4.10 installed two weeks ago, I went cheap and bough a 23 tooth speado gear. plopped the gear in tightened it about as tight a a spark plug and drove it about 75 miles. the way home going 5 mph in neutral I noticed a cyclic clicking noise which disipates when I touch the brakes.

Could I have screwed something up puting in a speedo gar? or is it just coincedental?

 

[85MustGT]

Another 23 tooth speado question

Can I disconnect the speado gear sensor and drive the car around the block to see if the sound goes away?