Thread: floor for channeled '30 coupe

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As rumrumm said, you need to build a subframe to go under the floor. BTW, 16 gauge is ok, but you really don't need to go that heavy. 18 or even 20 has been used, but you will do no harm with the 16 if you went that direction.

The subframe will be metal slats that tie in one side of the body with the other. You can do 1 x1 or 1x 2 box or rectangular tubing, and weld it from one side to the other, maybe every foot or foot and a half apart. You will have to build a tunnel in the center to clear your driveshaft, but that is easy to do out of flat stock the same width as your tubing or similar.

Here are some pictures of how my '39 is done, and also how my Kids '29 is done, to give you some ideas.

Don

thanks for the pic. got the idea how the door sill area is raised to the frame's height. also see the sub-floor frame . did you plug weld the sheets to the sub?