N.O.S. GM Speedometer Gears?

Any member know of a source for N.O.S. GM speedometer gears?

I'm looking for Driven Gear # 9774413 Light Green 34 Teeth and # 1362049 Green 42 Teeth. Both fit Chevrolet 350 Turbo auto transmission.

 

When I was looking for a gear for my OT mid 70's blazer 4x4 to correct the speedo I was able to get one from local chevy dealer, might be worth a shot. I cant remember off hand if they had one or had to order it, but the other partshouses had nothing.

 

GM will likely have no clue...look here:

http://www.tciauto.com/Products/TC-'Speedometer Gears'-0.aspx

 

http://www.transmissioncenter.net/speedometer_calibration_______va.htm

 

#9774413 still appears to be serviced by GM, list priced at $8.28.

#1362049 has been discontinued. You might see if a GM parts department in your area can check the number on their locator.