A question that I am not sure how to even ask...

Danarchy said

In my 1964 225 Slant 6 with a WIX 51515 oil filter change I use just over 6 quarts to be just below Full on the dipstick.
I am afraid that when you start to unbolt the valve cover, you will have a huge mess. Unless you filled the transmission with oil???:wack:

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No, the tranny fluid goes in the tranny box filler tube. I filled the oil access on the top of the valve head; its the breather access.

I'm surprised that your car takes 6 quarts as the shop manual and owner's manual stipulates 4+1, but maybe the blocks are different? I don't now, I don't have a '64.

In any case, the oil went into the fill but has not spilled into the il[an, so something is clogging it up.

Thanks for the help...