Speedo Gears - Stock and Non-Stock - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jwgeorge · 09-09-2011, 03:55 PM

OK, So I did a search and didn't find what I was looking for.
68 C-10, 4-spd. SM465 trans, the factory rear gear was a 3.73, swapped-in a 3.08 axle.
With the 3.73 axle the speedometer was absolutely, perfectly, exact, checked by 2 different GPS units.
Now with the 3.08 axle it's off, yes, I know that's what happens.
What would be the factory gear (color? #-teeth?) be in the SM465?
What would be the proper gear for this combo?

References to websites would be helpful also.

Thanks!

09-09-2011, 03:55 PM	#1
jwgeorge Registered User Join Date: Dec 2010 Location: Pearland, TX Posts: 224	Speedo Gears - Stock and Non-Stock OK, So I did a search and didn't find what I was looking for. 68 C-10, 4-spd. SM465 trans, the factory rear gear was a 3.73, swapped-in a 3.08 axle. With the 3.73 axle the speedometer was absolutely, perfectly, exact, checked by 2 different GPS units. Now with the 3.08 axle it's off, yes, I know that's what happens. What would be the factory gear (color? #-teeth?) be in the SM465? What would be the proper gear for this combo? References to websites would be helpful also. Thanks! __________________ 1968 C-10 Longbed, 6-cyl., 4-speed. 832-584-1245 "You see, in this world there's two kinds of people, my friend, those with loaded guns and those who dig."



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