If Oldsmobiles count, I had several cars in the '60's with 303-394's in them. None of the bodies were Olds, but we swapped Oldsmobile V8's into a few Fords and even a Rambler Station Wagon.

My first production car with a big block was a brand new tripower GTO I bought in '66.

Don

Oh, forgot about the '51 Chrysler Hemi car I had with a fluid drive tranny. (cross between a stick shift and automatic.) I blew the clutch out after one night doing burnouts.