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Old 05-15-2015, 11:20 PM   #1
57taskforce
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Shaving firewall/floor seam

I'm getting ready to tear into the rust on my k/20. I had thought about throwing a complete floor at it but upon further inspection it's really only rusted bad on the outer sections and the front pans. The supports are salvageable, the rear inner floor sections below the ends of the fuel tank are good, etc. I'm just gonna patch what I've got. My question is if I'm lookin at the pictures online right it appears that the front pans shave the seam between the firewall and the floor. Really want to hear from someone who has done this job before as to how it turned out. I've done a couple of complete floors before and I've got body experience. I really just am unsure that I want to shave the seam. That's what it boils down to. I've got to believe the bends add strength to the cab.
I'm considering these pans:http://www.autometaldirect.com/tripl...-lh-p-870.html
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'57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888
'72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879
‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206
'98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's
‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue
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Last edited by 57taskforce; 05-18-2015 at 12:52 AM.
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Old 05-16-2015, 12:31 AM   #2
Blown06
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Re: Shaving firewall/floor seam

The bends will add strength, think of it like a piece of angle iron under there versus a piece of flat bar.

I'm looking at welding my factory seams on my 71. The factory seam sealer has deteriorated and the spot welds have gaps on the joints. Curious to hear what others have to say about it so I had to post.
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Old 05-18-2015, 12:52 AM   #3
57taskforce
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Re: Shaving firewall/floor seam

Ttt
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'57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888
'72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879
‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206
'98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's
‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue
‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0
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Old 05-18-2015, 06:31 AM   #4
71blksuper4x4
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Re: Shaving firewall/floor seam

Tyler, I bent my pans with a hammer and dolly on the crew cab to keep the seam.
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1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks)
1972 Jimmy (soon to be Hickey cloned)
1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track)
1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank
1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT)
http://67-72chevytrucks.com/vboard/s...d.php?t=624819
1989 V3500 Crew Cab (454tbi, NV4500, np205)
1970 Chevelle SS (LS5 454,th400,8track,buckets,tach)
:2004 Jeep Wrangler Rubicon (daily driver)

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Old 05-21-2015, 12:08 AM   #5
57taskforce
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Re: Shaving firewall/floor seam

Trevor thanks for that I'm just now checking things, been on the road all week. Was the fire wall side of your seam ok? I notice you used the partial rear outer floor patch, is that as far as it goes back or did you modify it for the crew cab build?
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'57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888
'72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879
‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206
'98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's
‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue
‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0
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Old 05-21-2015, 07:24 AM   #6
71blksuper4x4
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Re: Shaving firewall/floor seam

It wasn't the partial to begin with. I used the full piece and cut where I needed to. The suburban floor overlaps itself right there via a flange. I modified my patches to continue exactly like the floor was made at gm on my crew. The full piece goes back from flange to back of cab. Trevor
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TREVOR
1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks)
1972 Jimmy (soon to be Hickey cloned)
1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track)
1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank
1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT)
http://67-72chevytrucks.com/vboard/s...d.php?t=624819
1989 V3500 Crew Cab (454tbi, NV4500, np205)
1970 Chevelle SS (LS5 454,th400,8track,buckets,tach)
:2004 Jeep Wrangler Rubicon (daily driver)

WTB: 1968-70 Cruise Control Lever
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