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Old 03-21-2025, 01:50 PM   #1
Leinhit
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Rear bumper stepside - wrong one?

1960 Chevy C10 stepside 2 wheel drive

I received a rear bumper from summit.

Order

Brothers Trucks Bumpers RRB66RW

On their website it says it fits my specific vehicle. However I can't figure out how to get it mounted it doesn't seem to be wide enough to wrap around the rear fenders at all.

*On the box on the outside is printed fits Chevy 55 through 59. Even though summit website listed it as fitting all the way up through 1966, it's says specifically fits my 1960 Chevy C10 stepside.

I'm not finding this the case. Can anyone confirm this is not the right rear bumper? I'm going to have to fight with them to return it I'm sure. And this is the only rear bumper they offered for my truck.

*I want painted, not chrome.

Can anyone supply a specific link to what I do need?

Thank you.
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Old 03-21-2025, 02:16 PM   #2
bhap
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Re: Rear bumper stepside - wrong one?

55 to 66 are the same bed so I think the bumpers are the same.

There is a pic from your other thread on rear bumpers of a new rear bumper being held up to your truck - same bumper? It looks long enough in that picture, although you can't see both ends. The other thread also has a pic of my original bumper that looks the same as your new one. Not sure what the issue is?
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Old 03-21-2025, 02:23 PM   #3
Leinhit
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Re: Rear bumper stepside - wrong one?

My research says 55 through 59 bumpers are 3 in shorter than the 60 to 66?

Summit originally sent me the wrong brackets and then they were for a fleet side. Then they sent me the ones for a step side. However working on it today I cannot get the brackets to line with the bumper holes and mount to the outside of the frame rails. Something just isn't right and I'm believing that it's the rear bumper is wrong.

It's advertised as fitting my specific vehicle also 55 through 66. However the box that showed up said 55 through 59 Chevy / gmc.

I tried every combination of the brackets I can think of and something just isn't right. I was about to call summit to return the bumper but would like some input from others first.

*I could move the rear bumper farther away from the truck itself so the end of the bumpers are not touching the fenders. But I think that's too far away and will look goofy. And even then the holes in the bumper still do not line up with the brackets.

I appreciate your help.
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Old 03-21-2025, 06:06 PM   #4
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Re: Rear bumper stepside - wrong one?

I got my bumper from Bill's Truck Shop in Canada. It is listed as a 60-66. The 55-59 is a different part number in their catalog.

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Old 03-21-2025, 06:27 PM   #5
Leinhit
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Re: Rear bumper stepside - wrong one?

I'll see if I can find it online there. None of them give any specifications how long or how far apart the bolt holes are.

*If this helps anyone the bolt holes are 14 and 7/8 apart center to center, On the bumper.

Does that sound right for a 1960?

If I mount the brackets to the frame first they're not even close to the bumper. If I mount the brackets to the bumper then they don't reach the frame.

I have the brackets they sent me originally that were incorrect and for a fleet side. I also have the brackets they sent me they claim fit my truck.

I figure between the two sets of brackets I should be able to come up with something. Unless the bumper is just wrong..?

Maybe I'll just send it back and put a piece of gas pipe on these brackets and use that for a bumper.

*This is the link to the bumper I bought. Been working on it all day have others helping and something just ain't right

https://www.summitracing.com/parts/hct-rrb66rw

Last edited by Leinhit; 03-21-2025 at 07:28 PM.
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Old 03-21-2025, 08:25 PM   #6
Leinhit
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Re: Rear bumper stepside - wrong one?

Quote:
Originally Posted by bhap View Post
55 to 66 are the same bed so I think the bumpers are the same.

There is a pic from your other thread on rear bumpers of a new rear bumper being held up to your truck - same bumper? It looks long enough in that picture, although you can't see both ends. The other thread also has a pic of my original bumper that looks the same as your new one. Not sure what the issue is?
Here is a pic of the rest of the frame.. I found on the front someone had cut the front frame.. does this look?
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Old 03-23-2025, 06:36 PM   #7
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Re: Rear bumper stepside - wrong one?

Bumping this up as I'm still looking for an answer.

The bumper they sent me is 70 and a half inches long from the widest point to the widest point.

The frame at the rear is 41 and 1/2 in from outside to outside. I'll include the photo of the end of the frame again if someone has an opinion if this looks like factory or if it's been cut off or altered in any way?

I'm also including a photo of the brackets I was sent. I have the first set that they say were wrong and they replaced with what they say are the correct brackets. The bracket set they sent as replacement that curved down are on the left.

The ones they appear to be the wrong ones are black and on the right and do not curve up or down but straight out.

Mounting the brackets to the bumper and then holding it up towards the frame the brackets are about 34 and 3/4 in apart and approximately three and a half inches away from the inside of the frame on both sides. Again the outside to outside rear frame is 41 + inches. I'm including photos of what the curved part of the bumper looks like in relation to the rear of the fenders. Does this look like correct placement or should the bumper be even wider?

The outside of the box says bumper fits 55 through 59 chevys. But there is a smaller sticker on it that says right up through 1966.

From what I've read the bracket should mount to the outside of the frame. But they're not even wide enough to reach the inside of the frame.

I've included some photos to hopefully someone can point out my error...
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Old 03-23-2025, 07:23 PM   #8
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Re: Rear bumper stepside - wrong one?

I'm including two more photos. I ran a piece of flat stock across inside to inside of the frame. It gives a better visualization how far off the brackets are from the frame.
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Old 03-23-2025, 09:43 PM   #9
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Re: Rear bumper stepside - wrong one?

The early frames (60-62?) are wider. But by how much I don't remember. You need the early brackets.
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Old 03-23-2025, 10:55 PM   #10
Leinhit
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Re: Rear bumper stepside - wrong one?

Quote:
Originally Posted by SkinnyG View Post
The early frames (60-62?) are wider. But by how much I don't remember. You need the early brackets.
Summit sent me the wrong ones the first order. I called them and they called the company that supplies the brackets. They supposedly confirmed that the ones they sent me the second time are the correct ones.

This is what they sent me.

Auto Metal Direct Bumper Brackets 970-4055-S.. checking the fitment list it does cover 60 to 62.

*Do you or anyone else have a link to what it's supposed to be the proper ones that I need?

Brackets they sent me were 105 bucks. Getting expensive keep getting the wrong ones.

Thank you
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Old 03-23-2025, 11:50 PM   #11
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Re: Rear bumper stepside - wrong one?

(I fabricated my own brackets, sorry)
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Old 03-23-2025, 11:53 PM   #12
Leinhit
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Re: Rear bumper stepside - wrong one?

Quote:
Originally Posted by SkinnyG View Post
(I fabricated my own brackets, sorry)
I'm about to figure out how to make these brackets work.

Or send the bumper back and just get a big gas pipe, cap it at the end and paint it the off-white.

I'd rather get this working though
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Old 03-24-2025, 12:12 AM   #13
Leinhit
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Re: Rear bumper stepside - wrong one?

Quote:
Originally Posted by SkinnyG View Post
(I fabricated my own brackets, sorry)
I'm about to figure out how to make these brackets work.

Or send the bumper back and just get a big gas pipe, cap it at the end and paint it the off-white.

I'd rather get this working though
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Old 03-24-2025, 11:18 AM   #14
SkinnyG
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Re: Rear bumper stepside - wrong one?

This is my video on making my brackets.

Consider, perhaps, connecting it to a hidden trailer hitch.

My video on building my trailer hitch.
.
.
.
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Old 03-24-2025, 02:15 PM   #15
Leinhit
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Re: Rear bumper stepside - wrong one?

Quote:
Originally Posted by SkinnyG View Post
This is my video on making my brackets.

Consider, perhaps, connecting it to a hidden trailer hitch.

My video on building my trailer hitch.
.
.
.
Okay thank you sir. Your video helps.

I'm surprised it did not come up in my searches as I am already a subscriber...

My braces were not cheap they were $105 at summit. So I'm trying to get them to work. And of course the first set was only $85 and that was wrong too.

I'm wondering if I could get some heavy gauge square tubing and make a three and a half inch spacer between the frame and the braces I have. Then long carriage bolts through the hole setup followed up with some welding..

But your video has me thinking now.. or maybe some additional bracing that I've bend with the torch to make it go over to the frame and then to my existing braces..

Last edited by Leinhit; 03-24-2025 at 03:06 PM.
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Old 03-24-2025, 04:01 PM   #16
SkinnyG
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Re: Rear bumper stepside - wrong one?

"Where there's a whip, there's a way"
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