Rear body mount stripped?

[E84MC]

So my second to last rear driver side body mount is stripped (the one right behind the tire), it’s not just loose wiggling around but barely tightens up. I’ve seen online a couple ways of fixing this but I am not a welder. My question is if all my other mounts torque to spec (like they do) will I be ok with leaving that one as is since the one behind and in front this one are good? Only planing for 400rwhp max.

 

[E84MC]

Here is where the hole get drilled. I used a 2 1/2" hole saw. And put body plugs in them when done. The drivers side had a dome up that was centered right over the bolt. I drilled a small hole on the passenger side and probed around and found where the bolt was and drilled over it. These are the number six positions (behind the wheels) on both sides.
I used such a big hole to get the damaged cage nut out and used large washers and a nut on the new bolts
View attachment 187311 View attachment 187312

Helps a lot thanks!

 

[Ugly1]

Sorry I meant to say dimple in the trunk floor ( pointed up) if there is no dimple take a longer bolt that needed and tighten it up till it hits the floor so you know where to drill got any questions just ask

Good idea

 

[64nailhead]

I have had to make this repair on every G I've worked on at the same hole(s) coincidentally. Not really a coincidence haha. I go about it differently. I cut out the truck floor above the fubar'd nut with a 2"x5" rectangle and am careful to cut it out like a puzzle piece. Then I take a piece of flat stock that once installed it cannot get out from over the hole. Then drill a hole in it and weld on a nut on the top side.

The new piece is body bound similarly to the factory cage. The I weld the puzzle piece back into the truck floor. The welding is slow because of the gap filling,

All in all, about a 6 pack job.

 

[565bbchevy]

When I do the trunk body mounts I cut a flap to access the cage nut, for replacement nuts I use Unistrut 1/4" thick 2" x 2" square flat washer and weld a nut on those and remove the original cage nut and clean up the area on the frame and then put a few welds on it once everything is lined up and then I close the flap. and weld it shut.

 

[mc1984ss]

Here's the location of the bolts viewed from inside the trunk. As you can see I had to add a nut to the rear one. I need to get a shorter bolt for the plug to go in