speedo reduction box
 

Did the COPO Chevelles use these??

http://cgi.ebay.com/ebaymotors/ws/eBayIS...A%3AIT&rd=1

If so I need to get one...part # ??? Thanks

ALbert

Re: speedo reduction box
 

Albert,

Read THESE THREADS. It'll 'splain everything.

Ed

Re: speedo reduction box
 

Al, This is the original one on my 69 L78 Camaro with M-21 and 4.10 gears.

Re: speedo reduction box
 

Is there a pin or key that goes from the reduction unit to the speedo gear? I still can't get mine to work properly https://www.yenko.net/ubbthreads/imag...emlins/mad.gif

Re: speedo reduction box
 

Someone find Marlin that Damn pin!

Re: speedo reduction box
 

I have the Damn pin, (technically a 'key') but something still aint jivin https://www.yenko.net/ubbthreads/imag...emlins/mad.gif

Re: speedo reduction box
 

Marlin, Attached is pic of the key that goes inside the gear and reduction unit, it is 1 13/16" long. If you can't get it working, just sell me the damn old Nova.

Re: speedo reduction box
 

Ed, thanks for the link..OK, I have read the threads and guess I need this one??

4.10 Rear Axle, 7.35x14 or F70-14 Tires, 8 tooth Drive Gear (P/N 3924098), 20 tooth Driven Gear (P/N 3860343), 3 Speed (exec O/D), HD 3 Speed, Powerglide or 4 Speed Transmission. Adapter P/N 6476736.

Did I choose wisely??

Merry CHristmas everyone

ALbert

Re: speedo reduction box
 

Albert.

Well, almost. You have a 69 Chevelle and it's a bit different on a few ratios than the Camaro! For a 4.10 rear end with F70x14 tires and a 3 or 4 speed manual transmission, you'll need the following:

3924098 8 tooth drive gear
3860342 19 tooth driven gear (neutral color)
3932220 Adapter

I didn't see your reference to the COPO Chevelle above. Sorry about that!

And by the way, GM didn't use a Stewart Warner reducer. That's an aftermarket item.

Ed

Re: speedo reduction box
 

What do you need a speedometer for anyway, to see how fast your going up the trailer ramp?? https://www.yenko.net/ubbthreads/imag...ins/3gears.gif