Was the 4.11 ratio available for 72 LT1

[BPRACER68]

My 72 LT1 was 4.11 gears in it and I would like to know if this ratio was available or was it aftermarket?

 

[Rob]

The 4.11 ratio was an option (code AC) in 1972 and you could get it with the LT1 engine option.

 

[BPRACER68]

Thanks,The corvette black book is a little vague. In one section it lists it as an option and under one of the photo's it implies that it was only available with the ZR1 option.

 

[vettefinderjim]

Code "AC" was 4:11

In 1972, Corvette offered 3:36, 3:55,3:70 and 4:11 rear gear sets. The 4:11 set had a code AC