I was having trouble fitting my Vortec 350 with 700r4 trans into my 1973 240z. I followed all the steps Zcarparts.com said to do and yet the transmission just wouldn't fit into the transmission tunnel. So I took a closer look.
This pic was just after I started trimming it but it shows the old transmission mounting point on the tranny tunnel, this is welded onto the transmission tunnel and for the 700r4 to fit AT ALL you have to trim this down, I had to go this far.
And walaa then the Vortec 350 and 700r4 trans fit snuggly into place and the bottom most point of the transmission oil pan sits about 3/8 of an inch above the frame rails. It's like the 240z came with this setup. If your wondering why the valve covers are off exposing the heads not to worry when I bought the motor off a buddy he couldnt find em, I got a pair later and didn't bother covering them backup because I am doing a headgasket kit and doing a thorough cleaning of the head, valves, springs, pushrods etc and throwing it all back together with a vortec manifold for carburated and running a Holley 650. more pics to come after we get it running.