Brings up something I read years ago while the USCC was still around - seems I remember one or two verified Z's that had 388 blocks, sometime after the start of the 3956618 casting series, purportedly because of a brief casting shortage during production. Flint production ? Tonawanda ? Saginaw ?
My 69 Pacer has a 388, as a lot of the Pace Cars had in production between 2D and 5A-B, so the Z's might fall in those dates. Can anyone verify this ?