[Jzarczyn]

does anyone know why some GM cars have 3" holes with covers on them in the rear part of the floor?
and why they were put there?

I plan on stripping off all the old body caulk/sealer around the floor seams and fulley welding them up.
Has anyone ever done this? Any comments/suggestions?

[poncho62]

A lot of cars have those holes to line the body up on a jig when they are being welded together.

[philPKP]

YEAH BE CAREFUL WHAT YOU SEAL UP, THEY "RE COULD BE BOLTS UP IN THEM THAR HOLES FOR SUSPENSION OR TRAILING LINKS + SO ON, CHECK EM OUT GOOD STYLE BEFORE YA SEL EM MATE, ONE HELLOVA JOB TO "UNSEAL THEM" IF YA HAVE TO! ...............PHIL

[Jzarczyn]

It's a body on frame car, so, there shouldn't be any suspension stuff to worry about

[poncho62]

I repeat.........................

Originally posted by poncho62
A lot of cars have those holes to line the body up on a jig when they are being welded together.

[Igosplut]

The oval body openings that GMs have that have covers sealed over the top (usually galvanized covers) Are drain openings for water. when the cars went down the assembly line, they were washed several times (after sanding, and painting) to wash the dust, ect. If you look close, they usually have channels (that double as floor strengthers) that lead to them. There also at the lowest point of the floor, both in the interior and trunk. and if nobodys painted, or undercoated them, they should NOT be the body color. (As they were put in after final painting).

If its something that has to be correct, then replace them as they were.