fitting floor patch panel - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jd4300fel · 10-22-2005, 10:15 AM

My question is fitting the drivers side floor patch panel.
I have to replace the cab support/floor/kick panel/rocker.
My problem is the indent for the bolt that goes to the cab support does not
line up with the bolt hole on the support that goes from the back of the cab to the fire wall. I am off about .5 inch. It looks like I need to take a .5 inch
out of the whole floor panel between the rocker panel and the indent. how do I solve this? Do I cut the indent out, in an approximitly (sp) four inch square get the floor lined up, then line up the indent and weld. I am almost sure others had to deal with this type of problem?
I did not have this issue on the passenger side.

thanks for the help

Sweet72 · 10-22-2005, 10:52 AM

I had the same problem on the drivers side only, it was about 1/4 in off. I used a large socket as a die on the bottom of the panel and a piece of appropriate sized pipe on top and relocated the mounting boss with a BFH. With a little finesse you can make it look good. Maybe a little heat will make the process easier.

kaycee · 10-22-2005, 11:10 AM

Yep that is what I did allso the same as Sweet 72,I like to think of it as massage it till it fit with a BFH.

4x4Poet · 10-22-2005, 05:06 PM

You mean the hole that the body mount goes thru?

Do you need to replace the entire cab support? Most times only the portion of the cab support from the floor reinforcement patch around the body mount bolt needs to be cut out. Also, one can usually just replace the bottom of the cab support around the body mount bolt to avoid cutting the floor beyond the reinforced portion around the body mount. Just slip cut the new one's cut ends into the old remnant.

Just asking since patching only the outer portion of the cab support would avoid the body mount hole altogether except for cleaning out inside what's left of the original cab support prior to welding in the new.

jd4300fel · 10-23-2005, 10:12 AM

4x4poet,
the problem is the new floor pan is not 100% correct in the dimensions
so I can't get the indent on the floor panel to line up with the existing hole
in the cab support. Thanks for answering my next question I now have a plan for replacing the rear cab support.

10-22-2005, 10:15 AM	#1
jd4300fel Registered User Join Date: Aug 2002 Location: wheatland, Ca Posts: 427	fitting floor patch panel My question is fitting the drivers side floor patch panel. I have to replace the cab support/floor/kick panel/rocker. My problem is the indent for the bolt that goes to the cab support does not line up with the bolt hole on the support that goes from the back of the cab to the fire wall. I am off about .5 inch. It looks like I need to take a .5 inch out of the whole floor panel between the rocker panel and the indent. how do I solve this? Do I cut the indent out, in an approximitly (sp) four inch square get the floor lined up, then line up the indent and weld. I am almost sure others had to deal with this type of problem? I did not have this issue on the passenger side. thanks for the help __________________ Mike K Friend of Bill W

10-22-2005, 10:52 AM	#2
Sweet72 Registered User Join Date: Nov 2003 Location: Alexandria, VA Posts: 1,534	Re: fitting floor patch panel I had the same problem on the drivers side only, it was about 1/4 in off. I used a large socket as a die on the bottom of the panel and a piece of appropriate sized pipe on top and relocated the mounting boss with a BFH. With a little finesse you can make it look good. Maybe a little heat will make the process easier. __________________ '72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction. Last edited by Sweet72; 10-22-2005 at 10:53 AM.

10-22-2005, 11:10 AM	#3
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,454	Re: fitting floor patch panel Yep that is what I did allso the same as Sweet 72,I like to think of it as massage it till it fit with a BFH. __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327/4L60

10-22-2005, 05:06 PM	#4
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Re: fitting floor patch panel You mean the hole that the body mount goes thru? Do you need to replace the entire cab support? Most times only the portion of the cab support from the floor reinforcement patch around the body mount bolt needs to be cut out. Also, one can usually just replace the bottom of the cab support around the body mount bolt to avoid cutting the floor beyond the reinforced portion around the body mount. Just slip cut the new one's cut ends into the old remnant. Just asking since patching only the outer portion of the cab support would avoid the body mount hole altogether except for cleaning out inside what's left of the original cab support prior to welding in the new. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

10-23-2005, 10:12 AM	#5
jd4300fel Registered User Join Date: Aug 2002 Location: wheatland, Ca Posts: 427	Re: fitting floor patch panel 4x4poet, the problem is the new floor pan is not 100% correct in the dimensions so I can't get the indent on the floor panel to line up with the existing hole in the cab support. Thanks for answering my next question I now have a plan for replacing the rear cab support. __________________ Mike K Friend of Bill W

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