I know that the 1990 Mercury Grand Marquis allows for eight feet of room with the tailgate closed and the front seats pushed up a bit. How much room do Clamshells have from tailgate to front seats pushed all the way back? In inches, please.
Per the '72 Chevy wagon brochure, 100.5" from the back of the front seat to the tail gate. http://www.lov2xlr8.no/brochures/chevy/72wag/bilder/4.jpg Marshall PS: Approx. 105.7 cubic feet capacity.
I never measured one, but I know I could haul a full sheet of plywood in a Clamshell and close the Tail Gate and Glass to boot !! Bill
That was one of their selling points back in the day. They could hold a 4 x 8 sheet of plywood (or whatever) flat and still be able to close the tailgate.
I've hauled 4'x8' sheets of plywood in the Way Back Machine, but I'm glad I don't live too far from the home improvement store. I've got to move the front seat (both sides, separately) ALL the way forward, so much so that my gut is jammed against the steering wheel. The '79-'91 big Fords and Mercs would be much the same I suppose. If I have to do it again, I could always just leave the gate down.....
If it will fit, just let the plywood lay on top of the closed Tail Gate and let the rest go out the window. Maybe put a cloth down first so nothing scratches. I never liked driving with the Tail Gate down, on a Wagon or a Pick-up. I was always afraid of someone crashing into it causing big damage, rather than just hitting the bumper. Of course, with a Clamshell, we never had those problems with the Hidden Gate, lol. Bill