Inner to outer rocker panel gap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kansasc10 · 01-27-2021, 12:06 AM

Im replacing some rusty cab panels and am trying to find out the recommended gap between the inner and outer rocker panels... ie the gap where the weatherstrip molding sits. Thanks in advance.

**71CHEVYSHORTBED402** · 01-27-2021, 02:22 AM

If someone doesn't beat me to it I see my cab this weekend and will note to measure. By appearances yours looks same as mine. If I had to guess 1/4", though might be in 10ths.

May70 · 01-27-2021, 09:27 AM

I measured 3 or 4 factory cabs and all were about 5/8 with some variation. That being said the important thing is that the weather stripping you go back with fits into the channel. IE you need to get the weather stripping on it and test fit it before welding in the panels. Carpet goes up to the edge of that gap and is held down by the sill plate. Sill plate also holds the weather stripping down in the channel.

I am using the press on weather stripping from Wes and it fits into a 1/4-3/8" gap no issues. I elected to go with a smaller gap.

Here are two pics from the assembly manual to help you. The cross section color codes: orange = sill plate , red = inner rocker , blue = outer rocker & yellow = weather stripping.

Hope that helps

**Ironangel** · 01-27-2021, 09:27 AM

The gap width dimension is secondary to how the rocker panel lines up with the door...That gap is simply for the dome light wire and for the rubber door weather stripping. What is critical is how the rocker panel lines up with the closed door...The gap averages 1/2" inch..."Jus Sayin"

kansasc10 · 01-27-2021, 03:26 PM

Thanks for the help everyone. The door seems to be lining up good. I put some weatherstripping in the gap and and it also fits great. I just thought maybe the gap was a little too wide but according to everyone's feedback I should be good to go. Only 340 more cuts 1364 more welds and 38.5 hours to go before I'm finished....with this side.

01-27-2021, 12:06 AM	#1
kansasc10 Registered User Join Date: May 2015 Location: Kansas Posts: 61	Inner to outer rocker panel gap Im replacing some rusty cab panels and am trying to find out the recommended gap between the inner and outer rocker panels... ie the gap where the weatherstrip molding sits. Thanks in advance. Attached Images

01-27-2021, 02:22 AM	#2
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,118	Re: Inner to outer rocker panel gap If someone doesn't beat me to it I see my cab this weekend and will note to measure. By appearances yours looks same as mine. If I had to guess 1/4", though might be in 10ths. Attached Images __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025

01-27-2021, 09:27 AM	#3
May70 Registered User Join Date: Jan 2019 Location: Hampton Roads VA Posts: 644	Re: Inner to outer rocker panel gap I measured 3 or 4 factory cabs and all were about 5/8 with some variation. That being said the important thing is that the weather stripping you go back with fits into the channel. IE you need to get the weather stripping on it and test fit it before welding in the panels. Carpet goes up to the edge of that gap and is held down by the sill plate. Sill plate also holds the weather stripping down in the channel. I am using the press on weather stripping from Wes and it fits into a 1/4-3/8" gap no issues. I elected to go with a smaller gap. Here are two pics from the assembly manual to help you. The cross section color codes: orange = sill plate , red = inner rocker , blue = outer rocker & yellow = weather stripping. Hope that helps Attached Images __________________ 70 C20 Build link : Project Montezuma http://67-72chevytrucks.com/vboard/s...d.php?t=794479 How to repair that rusted out 67-72 c10-c30! Please subscribe! https://www.youtube.com/c/MaycoCustomRestorations

01-27-2021, 09:27 AM	#4
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	Re: Inner to outer rocker panel gap The gap width dimension is secondary to how the rocker panel lines up with the door...That gap is simply for the dome light wire and for the rubber door weather stripping. What is critical is how the rocker panel lines up with the closed door...The gap averages 1/2" inch..."Jus Sayin" __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"

01-27-2021, 03:26 PM	#5
kansasc10 Registered User Join Date: May 2015 Location: Kansas Posts: 61	Re: Inner to outer rocker panel gap Thanks for the help everyone. The door seems to be lining up good. I put some weatherstripping in the gap and and it also fits great. I just thought maybe the gap was a little too wide but according to everyone's feedback I should be good to go. Only 340 more cuts 1364 more welds and 38.5 hours to go before I'm finished....with this side. Attached Images



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