stepside fender gaskets? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1969stepside · Yesterday, 09:57 AM

are there any gaskets or anything that i put between the bedsides and the stepside fenders? should i make some or do they just bolt directly to the side of the bed without anything? i ask this because the lip is where the stepside fender rusts out

**raggedjim** · Yesterday, 10:02 AM

They came factory with a strip caulk. 3M makes a black strip caulk that works well.

Good luck, Rg

**dagnabbitt** · Yesterday, 10:16 AM

Earlier models - till 59 I think - used welting. I plan to use it on my 70 when I restore it, seems less messy and probably more forgiving for a klutz like me.

https://www.mar-k.com/partDetails.aspx?LID=13277

**pjmoreland** · Yesterday, 12:03 PM

Quote:

Originally Posted by raggedjim

They came factory with a strip caulk. 3M makes a black strip caulk that works well.

Good luck, Rg

That's what I used on my truck, as well.

https://www.amazon.com/gp/aw/d/B000P...b_b_asin_title

72c20customcamper · Yesterday, 05:33 PM

Strip caulk the 3m black is what I used too . Hint to apply it is to let it sit in the sun to soften it . It will then flatten out much easier and also easier to use a plastic scraper to remove excess.

1969stepside · Today, 09:02 AM

i have the fender welt but some people told me it would cause rust or something idk seems that the 3m is what most people are going with

**A1971Blazer** · Today, 09:23 AM

Most all the panels and assemblies from the factory were bare metal.
They used caulk and seam sealer to mitigate moisture intrusion. How well that worked? not so much over time.

You see a lot of corrosion above the upper windshield header both inside and outside because the sealer in the drip rail degrades and falls out over the course of time, and most people don't bother to repair it.

As far as the stepside fenders are concerned, the factory assembly manual specifies "plastic seam cement".
I assume the beds were assembled and then painted afterwards.

When I restored the bed on mine, I painted both the side panel and fender before assembly. I'm hoping that will help prevent corrosion between the two over time.
I do keep it in the garage, and I don't drive it in the rain if I can help it, but I do wash it regularly.

Yesterday, 09:57 AM	#1
1969stepside Registered User Join Date: Feb 2008 Location: Johnson City Tennessee Posts: 1,214	stepside fender gaskets? are there any gaskets or anything that i put between the bedsides and the stepside fenders? should i make some or do they just bolt directly to the side of the bed without anything? i ask this because the lip is where the stepside fender rusts out __________________ Greater love hath no man than to lay down his life for a friend. Members i Have met Earl Slick68 1969 Stepside Build thread http://67-72chevytrucks.com/vboard/s...=1#post4253546 Chevy Trucks the longest lasting most dependable trucks on the road

Yesterday, 10:02 AM	#2
raggedjim Senior Member Join Date: Jun 2002 Location: Murray, Kentucky Posts: 3,622	Re: stepside fender gaskets? They came factory with a strip caulk. 3M makes a black strip caulk that works well. Good luck, Rg __________________ Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer - https://67-72chevytrucks.com/vboard/...d.php?t=856475 '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203 Ideas - https://67-72chevytrucks.com/vboard/...d.php?t=851743

Yesterday, 10:16 AM	#3
dagnabbitt Senior Member Join Date: Dec 2014 Location: Edmonton Alberta Posts: 1,504	Re: stepside fender gaskets? Earlier models - till 59 I think - used welting. I plan to use it on my 70 when I restore it, seems less messy and probably more forgiving for a klutz like me. https://www.mar-k.com/partDetails.aspx?LID=13277 __________________ DAVE Edmonton, Alberta 1959 Apache 1967 K20 1968 C20 1970 C10 1972 GMC 2500 1981 C10

Yesterday, 05:33 PM	#5
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,867	Re: stepside fender gaskets? Strip caulk the 3m black is what I used too . Hint to apply it is to let it sit in the sun to soften it . It will then flatten out much easier and also easier to use a plastic scraper to remove excess. __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary.

Today, 09:02 AM	#6
1969stepside Registered User Join Date: Feb 2008 Location: Johnson City Tennessee Posts: 1,214	Re: stepside fender gaskets? i have the fender welt but some people told me it would cause rust or something idk seems that the 3m is what most people are going with __________________ Greater love hath no man than to lay down his life for a friend. Members i Have met Earl Slick68 1969 Stepside Build thread http://67-72chevytrucks.com/vboard/s...=1#post4253546 Chevy Trucks the longest lasting most dependable trucks on the road

Today, 09:23 AM	#7
A1971Blazer Senior Member Join Date: Nov 2013 Location: East Tennessee Posts: 2,223	Re: stepside fender gaskets? Most all the panels and assemblies from the factory were bare metal. They used caulk and seam sealer to mitigate moisture intrusion. How well that worked? not so much over time. You see a lot of corrosion above the upper windshield header both inside and outside because the sealer in the drip rail degrades and falls out over the course of time, and most people don't bother to repair it. As far as the stepside fenders are concerned, the factory assembly manual specifies "plastic seam cement". I assume the beds were assembled and then painted afterwards. When I restored the bed on mine, I painted both the side panel and fender before assembly. I'm hoping that will help prevent corrosion between the two over time. I do keep it in the garage, and I don't drive it in the rain if I can help it, but I do wash it regularly. __________________ 1967 C10 Step side 1968 C10 Step side 1970 Chevrolet K/5 Blazer 1972 Chevrolet K/5 Blazer .............



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