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Posted By: Guitplayer 58-59 Panel Cab floor replacement - Sat Mar 26 2022 01:15 PM
Has anyone replaced the cab floor on a 1958-59 panel truck?
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Sun Mar 27 2022 10:38 PM
I have this floor but will have to be cut

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Tue Apr 12 2022 10:11 PM
Well wish me luck.

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Posted By: TUTS 59 Re: 58-59 Panel Cab floor replacement - Wed Apr 13 2022 12:29 AM
Luck!!!!
Posted By: Phak1 Re: 58-59 Panel Cab floor replacement - Wed Apr 13 2022 12:44 PM
Yikes! I don’t see any bracing on the body. Did you cut out the floor without bracing the body first? If so you set yourself for a nightmare piecing it back together and getting everything to fit properly.
Posted By: klhansen Re: 58-59 Panel Cab floor replacement - Wed Apr 13 2022 06:00 PM
What Phil said about bracing. Your best approach would be to hang the doors back on and align them with proper gaps front, back, and top (or beltline matched), then install some bracing to hold that position. It'll be much harder to do, but, like Phil said, if you get it wrong, depending on the floor patch panel for location, you'll be up a creek when it comes to refitting the doors. If there's a Factory Assembly Manual for your year, you MAY be able to use weld checking dimensions from that, but the original doors would be a better approach.

Please take a step back and do some bracing.

Good Luck.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Wed Apr 13 2022 10:02 PM
Hey thanks. The dash is supported. Thats all thats there. I have to get the floor in
before I can put in the pillars.
Front clip is off. That`ll be all brand new.
Posted By: klhansen Re: 58-59 Panel Cab floor replacement - Wed Apr 13 2022 11:49 PM
I see that the dash is blocked up, but you don't have anything that I can see that would prevent the bottom of the door opening from spreading or shrinking. That's the critical part. You really need bracing to hold the cab in the correct position front to back at the bottom of the door and also something to prevent the door opening from becoming distorted diagonally.
It should look like this: [] and not like this: //
It really doesn't take much to get too far off for the doors to fit. Are you saying the lower hinges are not there?
The front clip is a totally different thing.
If you don't have one of these [classicparts.com] you definitely should order one. That link isn't the only source.
Posted By: tom moore Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 12:51 AM
I replaced the entire front steel floor section on my suburban - with minimal bracing at first. I put the doors back on - and used a couple ratchet straps to get the gaps close and then welded a couple braces. All of this after the fact of cutting out the old floor...and wish I knew that beforehand. Just like woodworking nothing is fatal except a good fire - but there are some things to prep and think ahead of time to prevent a lot of work later. So - rehang the doors - check the gaps, make sure it is latched - use what you have to push, pull, adjust, and get them close and brace it - then do the same on the other side.

I give you a lot of credit - what you're doing isnt' for the faint of heart - but do-able. The trick is to think three steps ahead.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 10:48 AM
I`ll be the first to admit I don`t know what I am doing. I have exhausted
all hopes of finding anyone that can do the work. Nobody wants to and
I don`t want to beg. So, I'll try myself. I have enough money and time.
We`ll see. I`ll either end up with something decent or a pile of junk.
I have no other avenues.

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 11:44 AM
Only doors are the originals. They are in decent shape cept for the very bottom.
I have the panels. But past my expertise to repair. New ones were ordered but now backordered indefinitely.
I also have brand new hood and fenders.

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Posted By: tom moore Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 12:01 PM
Keep at it...and as you fit and align the doors and floor - post the pics here and others here will guide you...and by sharing you will be showing others who need to do the same. Hat is off to you... one step at a time - walk away at times if you need to, and come back to it with renewed energy and fresh eyes. Others here with the same cab type may be able to take measurements for you and post photos here of those measurements to guide you.

Good project!
Posted By: Phak1 Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 12:35 PM
Can you post pictures of the door opening including the pillars? We need to see what you are working with. The outside of the doors too.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 02:09 PM
Hey thanks guys!! I figure its worthy. 1958 Apache 1/2 ton economy.
With all the knowledge here ,I might be able to get thru this.
This is my plan. With pics and measurements, I should be able to raise the floor where the old one was.
The 2 humps off that back rail I will have to remove so the wood fits down
along side the hump/ridge. The angle strip will marry the floor and wood together.
Level the floor and lay the upper floor repair panels ontop of the 3/4 floor.
This should help keeping the dash and pillars straight. Still with bracing once floor is in.
Its amazing what survived on this truck. Id say about 5/8 ths of it was there.

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 02:16 PM
Some pics of the truck before I removed the body

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Posted By: klhansen Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 05:16 PM
It looks like the lower hinge on the driver's door is gone, but I would still remount the door with the upper hinge and even tack it in place after you get the gaps adjusted. Then go inside (or crawl under wink ) and weld some bracing across the inside of the door opening, as far down as you have solid metal on the A and B pillars, and another up near the belt line.
Your plan with the floor is good except that you have no good reference currently for the front to back dimension. DO NOT depend on the replacement floor pan to be correct.

You should be commended for taking on that project. As the other guys have said, take it one step at a time, and DO ask for help here. We want to see the finished project. We can help you produce something you can be proud of.

You can do it. thumbs_up
Posted By: Justhorsenround Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 05:38 PM
Brace brace brace brace, attach the doors, fit and brace brace brace. I can’t emphasize enough brace. You have already gone too far without bracing. Step backwards and correct your mistake before going forward again. Aftermarket floor pans are NOT perfect. Im just emphasizing what everyone else has told you. Do not ignore this free advise.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 10:17 PM
Thanks!! The pillars are shot with no way currently to mount a door.
I can brace and mount the doors to whats left of the top and back hopefully.
Make sure the steps line up with the doors.
The doors are another thing. I bought a new tig digital welder and
hope to get some lesson on using it to install the lower repair panels.
I have one cut and fitted. Waiting on a inside hinge plate.
Fun stuff!! I can rewire a truck ,bed wood , leaf springs , brakes, gas tanks...stuff like that.
This is all together different for me. I will back up , slow down.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Thu Apr 14 2022 10:27 PM
Good news is that everything forward is brand new.
Posted By: Phak1 Re: 58-59 Panel Cab floor replacement - Fri Apr 15 2022 01:11 AM
Originally Posted by Guitplayer
Good news is that everything forward is brand new.
Unfortunately, I hate to break it to you, that is both good and bad news. After market sheet metal is notorious for not fitting properly. Many bolters have drove themselves near crazy trying to get the gaps and alignment to factory specs. A good example is a fellow bolter “Fox”, that bought an entire new bed for his build and ran into issues when the tailgate didn’t match the rear right bedside. Here is a link to that post. https://www.stovebolt.com/ubbthread...ndpa-s-1970-c10-rebuild.html#Post1446340

The front end is another hurdle you sill have to tackle, but you have to get your cab together first. Don’t look that far forward, as you will only get discouraged. Take the job at hand and research. That is what this forum is for, so you don’t make the mistakes that we bolters already have.

If it was my project, my first thought would be to reinstall the old floor temporarily with tacks, then brace the doors.

If that isn’t possible, I would hang the doors back on (don’t fix them yet, use them as is because you will use them to locate the lower hinge and fixing them now will only compound the issue), even if you have to tack weld an angle iron across the skin of the doors to the sheet metal on the body to locate the door and establish the gaps then use the lower door hinge to locate the “A” pillar and tack weld it in place. Don’t weld it in completely until you fit the floor and the other associated panels. Next brace the door opening both horizontally and diagonally, then remove the door. This way you will know that the lower hinge and pillar is in the right place.

Good luck and don’t be shy about asking questions.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Fri Apr 15 2022 11:04 AM
Great advise. Thanks!!!

I do find it quite discerning that the repair panels made in China and Taiwan don`t
fit properly. That/they probably should not be imported. IDK what else to do with the truck but if I am fighting an
uphill battle, thats difficult with my expertise level.
If all this fails, I guess my alternative would be to turn it into a fleet/step side?
Hopefully the frame is not much different than either of those. Would just need a cab.
Posted By: klhansen Re: 58-59 Panel Cab floor replacement - Fri Apr 15 2022 06:06 PM
The patch panels from offshore can definitely be problematic, but they're just metal. You can make them fit with some massaging. Front clip parts may be another issue, but everything can be fixed, given enough time and patience. I think you're cab floor can be successfully repaired. You just have to be sure the dimensions are right. It would be a shame to just replace the body with a pickup cab/bed. Everyone has one of those. Hang in there. You'll be an expert when you're finished.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Sat Apr 16 2022 06:27 PM
Hey thanks man! Great news. I guess. I raised the floor where
I thought it should go and placed the lower rear pillar patch panels and
both fit perfect. One thing concerns me is the cross sill originally
had a body frame mount bolt there. The new floor does not look that heavy duty of a sill.
I do have something in mind though.

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Posted By: klhansen Re: 58-59 Panel Cab floor replacement - Sat Apr 16 2022 06:38 PM
Looks good so far, but there's fitting and fitting perfectly. Before you commit with welding anything, MEASURE, MEASURE, AND MEASURE AGAIN.

On the body mount hole, there may be a reinforcement piece available. Definitely look into that. Do you still have the original floor to compare?
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Sat Apr 16 2022 08:23 PM
I do have the original. What I have will work. Its a cut down cross sill
50 inches. I can mount it behind the back of the new floor. And use
one of or drill a new hole there for the skid strips. I can tie that in with the new floor.
The doors look good. My plan current is to tack weld the doors to the
top of frame door and back of opening , after floor is in place ...somewhat.
I wont commit to it till after the doors are in. But so far is looks good.
Even whats left of the hump over the transmission at the front of the truck,lines up
with the new floor. But the left driver side front pillar I can visual see is off. the right side
looks true and straight.
lucky to find this rear cross sill for the very back. Mine was way shot.
I will install it and cross sills ,paint underneath and be ready soon to set on a
readied frame.

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Sat Apr 16 2022 08:39 PM
These had to be cut out. Careful not to cut thru the cross sill underneath.

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Posted By: klhansen Re: 58-59 Panel Cab floor replacement - Sat Apr 16 2022 09:08 PM
Looks like you've thought it out. thumbs_up
Posted By: Phak1 Re: 58-59 Panel Cab floor replacement - Sat Apr 16 2022 11:24 PM
Looks like it’s starting to come together. Nice work and good plan!
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Mon Apr 18 2022 12:09 PM
Between the wood and the angle strip there was some black "caulk" to
act as a sealant? What is a good substitute for this?
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Mon Apr 18 2022 03:15 PM
Originally Posted by klhansen
Looks good so far, but there's fitting and fitting perfectly. Before you commit with welding anything, MEASURE, MEASURE, AND MEASURE AGAIN.

On the body mount hole, there may be a reinforcement piece available. Definitely look into that. Do you still have the original floor to compare?
I found an extra leaf spring bushing that fits in the cross sill body mount hole perfect.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Tue Apr 19 2022 10:34 PM
Got this better back cross sill/deck on today. Top deck is dented some

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Wed Apr 20 2022 09:43 PM
Floor is in! I used non-hardening silicone sealant side
and bottom. Pretty solid . I want to move forward slightly
with the rest of the floor ,the new one lacks. The panels that
go part way up the firewall. Can I rivet those in or ...?
They match up perfect to what is there.

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Wed Apr 20 2022 09:44 PM
corner

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Thu Apr 21 2022 08:59 PM
far as I can tell every thing lines up. The floor has to sit 3/16ths of an inch lower
because of its made for a cab truck. The cross sill body to frame mount will be
weak because of the gauge of metal used on the new.
I am asking can I lay the upper floor repair panels over the new floor ?
I plan to use short carriage bolts. About 9 per panel. 3M panel adhesive
where they overlap. If anything I`ll gain some floor height heading up the firewall.

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Tue May 03 2022 11:56 PM
Lining up great

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Tue May 03 2022 11:58 PM
full pic

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Posted By: tom moore Re: 58-59 Panel Cab floor replacement - Wed May 04 2022 12:05 AM
Boy does that look nice. What a difference.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Wed May 04 2022 10:48 AM
Thanks!!
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Mon May 09 2022 05:22 PM
So I went ahead and planned to get the body back on the frame
before moving with any more sheet metal work. All the mounts to frame are
ready. 2 back deck , 4 at the bed.2 under the seat and 2 right there at your feet.
I used POR 15(4 cts) on the wood and surrounding metal. Turned out great with the wood grain
still showing thru the battle scars. Real hard finish to it.
Had to cut some pieces to make up for the
distance on the fleetside shortbed skid strips.

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Posted By: coilover Re: 58-59 Panel Cab floor replacement - Mon May 09 2022 10:38 PM
We are VERY exacting on panel replacement and gaps since a botched job costs us serious money where the hobbyist is out sweat and labor. On total floor replacement we fit the doors, with no hinges, into the body and shim till they fit the opening. The doors are then welded to the body with 4-6 good tacks on the front edge and rear edge. Bracing installed at this point so doors can be removed and floor/rockers/pillars/cross members can be welded in. Pictured is a 37 Chevy Business Coupe that the entire floor AND firewall was replaced (firewall to accommodate a big block engine).



Bracing installed but not in way of door fitting hole:

[![Jay-s-37-019.jpg](https://i.postimg.cc/BQpyC1GS/Jay-s-37-019.jpg)](https://postimg.cc/3dyn8NRV)

Doors shimmed for fit before welding:
[![Jay-s-37-022.jpg](https://i.postimg.cc/ZRPjK1bb/Jay-s-37-022.jpg)](https://postimg.cc/Hcxb6v8R)

All gaps MUST be thickness of a paint stir stick:
[![Jay-s-37-chevy-007.jpg](https://i.postimg.cc/MpRBS1Kx/Jay-s-37-chevy-007.jpg)](https://postimg.cc/9Dm0PR7N)

Body molding lines and door gap:
[![Jay-s-37-chevy-002.jpg](https://i.postimg.cc/RZV0Pf6X/Jay-s-37-chevy-002.jpg)](https://postimg.cc/SJ3qRnGM)

New floor and firewall:
[![Jay-s-37-chevy-008.jpg](https://i.postimg.cc/k48MVvzX/Jay-s-37-chevy-008.jpg)](https://postimg.cc/cgxG2wdV)
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Tue May 10 2022 08:25 PM
very nice. I don`t have a restoration shop. No one wanting to take the job on.
I will do the best I can as a hobbyist with the limited tools and accessories.
Right now I need to figure out how to get the body back on the frame.
Before I used cinder blocks , two 12 ft 4x4 and a bottle jack.
But that option is not up with the steps installed.
I have a 5000lb pulley and a 10,000lb winch and straps. Trying to figure
out using a spreader bar to keep the body from being "pinched" when raised.
Posted By: Phak1 Re: 58-59 Panel Cab floor replacement - Wed May 11 2022 01:17 AM
Do you have a engine lift and a buddy (or rental) with one too? You could use two, one from the drivers or passengers door and one from the back using a couple of 4x4’s fastened to the end of the boom and passed thru the windows.
Posted By: coilover Re: 58-59 Panel Cab floor replacement - Wed May 11 2022 05:21 AM
Here is how we lift bodies for S10 swaps as it leaves the floor under the cab/frame free of any hoist legs. The chain is bolted to the top door hinge bolt which is strong enough that no sheet metal damage will occur. A test lift is done and weights added front/rear to gain level balance. Once level the chassis can be rolled under the cab with nothing in the way.

In this case a 100# tractor weight was hung on the radiator core support, Without front clip weight is hung on firewall:
[![S10-026.jpg](https://i.postimg.cc/X7K7TnT3/S10-026.jpg)](https://postimg.cc/7f6kzrHQ)

Level cab is suspended in air ready for chassis to be rolled under it. Note chain can be seen just behind radio antenna:
[![S10-027.jpg](https://i.postimg.cc/ZnyTqS7b/S10-027.jpg)](https://postimg.cc/n9p8d6fg)

Your floor is really good for no bracing used.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Wed May 11 2022 08:34 PM
Originally Posted by Phak1
Do you have a engine lift and a buddy (or rental) with one too? You could use two, one from the drivers or passengers door and one from the back using a couple of 4x4’s fastened to the end of the boom and passed thru the windows.
Thats a thought. thanks
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Sat May 14 2022 11:28 PM
Bout there

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Tue May 17 2022 06:10 PM
With some great help from Wicruiser , we were able to get the body back on the frame.
Holes lined up. Very nice. Thanks so much Roger.
Some great people here on the Stovebolt.

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Wed May 18 2022 01:58 PM
Also wanted thank especially, Dan at Advanced Engine Concepts for
coming out to the house and helping me with my project. Best engine guy in this area.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Mon May 23 2022 09:59 PM
Quick description. I bottle jacked the rear of the body and put the body on 4x4`s. Removed cart.
12 foot with short 4x4`s ontop that were on the wood floor sills clearing the fenders.
Placed front to back. (2) 12 footers were side to side.
Using an engine lift we got the front up higher that the rear and strapped the front to the
ceiling of my hanger from the window openings. pulled the lift out. Took the rear wheels off the frame and
placed pumpkin and frame on furniture low profile dolly.
Rolled it underneath the body and put the wheels back on. Took about hour and a half.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Thu Jun 16 2022 11:47 AM
Will I have any problems running dual exhaust to the rear of this panel? The gas tank location
looks concerning.

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Posted By: WICruiser Re: 58-59 Panel Cab floor replacement - Fri Jun 17 2022 12:07 PM
Image didn't load correctly?
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Fri Jun 17 2022 03:51 PM
I guess right at the time of host providing.

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Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Fri Jun 17 2022 04:39 PM
My engine arrived. Thinking how best to get around gas tank
with exhaust pipes.

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Posted By: WICruiser Re: 58-59 Panel Cab floor replacement - Sat Jun 18 2022 06:54 PM
Looks like 2 into 1 rather than dual exhaust would make things a lot easier. If you are set on dual exhaust your going to need to cross over twice, once near the transmission and once behind the rear axle.
Posted By: Guitplayer Re: 58-59 Panel Cab floor replacement - Sun Jun 19 2022 08:48 AM
2 into 1 sounds good to me.
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