Been meaning to ask this question for some time now.
My 64 SD convertible originally came with a powerglide. Sometime prior to my buying it the tranny was changed to what I think is a 350TH.
From the attached pics, am I correct? Casting number is 8640300 with CFD1 below it. There is also a circle containing 17 ... and 5-76 is this a date code?
And the second part is, what does the C I and X X mean or stand for? It almost appears that they were welded onto the casing as they are neither the same size nor symmetrical.
