Speedometer Gear

[rsmlap]

Does anyone know the color of the stock speedometer gear in a 1981 350 with Automatic trans?

 

[Jack]

Does anyone know the color of the stock speedometer gear in a 1981 350 with Automatic trans?

Welcome to CACC! Can't help you with that except to offer suggestion: I believe your color (which indicates number of teeth) will be specific to your rear axle gear ratio. Perhaps if you posted your axle ratio, someone may be able to xref that to correct speedo gear (color).
JACK:gap

 

[cruisin80]

Dont know if it is the same but I had to replace the speedo driven gear(this is the one on the speedo cable the one in the tranny is the drive gear) on my 80 and it was blue. I just took mine to a tranny shop and he found one in his box of used spare ones and charged me 1.00 .

 

[rsmlap]

I believe the rear end ratio is 3.07. The speedometer is 20mph off. That's why I need to know, so I can get the proper one. The rear tires are 275/60 15

 

[Ala75Vette]

Each tooth on the driven gear = approx. 5 mph, so if you have your old one, and you're reading 20 mph too "fast", get the one with 4 less teeth and give it a try. You may have to adjust up/down a tad to get it "just right."