Stock rear gear ratio question
What is your source for that information? I see 3.91's listed in the factory parts manuals for both 1963 and 1966.
I'm pretty sure that the page I posted is originally from Ross Roy literature. But I pulled my copy off Hamtramck Historical's website, which has this and other literature posted online. E.g., post #2 above.
However, I have the exact same page in an old paperback book of mine:
Barracuda 1964-1969, a Book of Information (copyright 1984).
I did look at my 65 parts manual, Section 3-19-1, page 3-8, and it looks to me like in the 7 1/4 rear end, 3.91 gears are six cylinder only. V8's show 2.93 and 3.23 (I don't even see 3.55's here).
My 65 Barracuda Commando 273 4-speed originally had a 7 1/4 rear with 3.23 gears. I'm pretty sure that 8 3/4 rears weren't available in A bodies until sometime in the 66 model year.
I don't know that any of the above is the be all and end all, so will happily stand corrected if wrong (been wrong before).
