Stock gear options for Big Block 68-79?

[74bigblock]

Now that I reflect.... big blocks ended in '74, but my questions still stand...


I'm in need of a new/reman diff. Per CAC's model center, the stock rear gear on the `74 454 3 speed Auto was 2.73. When I pulled my diff and spun the input shaft, it took just over 3 revolutions for the yolks to spin once. This makes me think that either:

A) There was an optional 3.08 gear
or
B) The gear in my car is not original


BUT:

The date stamp on the main gear is 12/73... which makes me think more of the optional gear. Can anyone tell me which is the case?

I assume if I want to keep the same performace, I should replace this diff with one that has a 3.08 in it (which is available through most reman distributors).

Thanks!

Dave



:confused

 

[JohnZ]

'74 454 auto standard axle was a 3.08, with 3.36 optional. There were no 2.73 axles until 1975.

 

[74bigblock]

'74 454 auto standard axle was a 3.08, with 3.36 optional. There were no 2.73 axles until 1975.

Thanks John... Someone should update our model center accordingly.