champs65

I have a spare 4 speed sitting in my garage that does not have a plastic driven gear or fitting in the side of the transmission. It is a 63 muncie that I bought that way a while ago.

Short of pulling the tailshaft off and checking the speedometer drive gear, any suggestion as to what color gear I should buy just as a good starting point? For what they cost I just want one in there to keep debris from getting inside. Thanks in advance.

66jack

Whats your differential gearing...?

Here's a calculator...


http://www.stl-vettes.com/65Vette/GearCalc.htm

Mike67nv

Here's a Tech Sheet written by JohnZ and posted a while ago. The two drive gears have a slight width difference in addition to the diameter. You might be able to measure it to tell what you have?

champs65

I like that calculator.

Looks like I'll have to pull the tailshaft off to measure the drive gear before I can settle on a driven gear after all?
I was hoping it would be as simple as finding the most common 63 driven gear and starting there but I guess I need to know what diameter the drive gear is first