I need a picture of the bottom of a 4 speed car

[69hemibeep]

I'm doing a 4 speed conversion on a 72 Challenger and would like to see the size of the hole. The floor hump is rather long and was wondering how much material has to come out.

 

[Adam]

Do you have the replacement 4 spd hump? Don’t get ahead of yourself if you don’t have it. If you do have it, use it as a template. There needs to be some overlap so you can drill small holes (1/4 or 5/16) in the trans tunnel flange and plug weld it to the floor; like spot welds. I believe this will give you the strongest floor. Then apply seam sealer.

 

[rklein71]

This is not a picture of a stock cut out but a picture of the floor I cut. I basically laid down the hump and outlined the hump and then cut an inch or so to the center of the my marks. I stitch welded every couple inches an inch long bead and then seam sealed it. I also filed down the sharp edges to I wouldn't cut myself when I worked underneath the car. Rod

 

[69hemibeep]

Ok thanks. I did a B-body but they only need room for the shift mechanism, much smaller hole.

 

[RJHJR]

 

[69hemibeep]

That's most likely cleaner than the factory did it, nice! And thanks