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Old 02-07-2018, 08:01 PM   #1
bigbadchev72
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Rear sport bumper install

I just bought the rear sport bumper kit with brackets and was needing pics of how they are installed. Looks like I will only be able to get 1 bolt in each side? Is that correct? Also how do the dust shields install? Thanks
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1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels
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Old 02-07-2018, 08:09 PM   #2
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Re: Rear sport bumper install

HUH?
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Old 02-07-2018, 08:12 PM   #3
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Re: Rear sport bumper install

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Originally Posted by harpo231 View Post
HUH?
I just bought the rear sport bumper kit with brackets and was needing pics of how they are installed. Looks like I will only be able to get 1 bolt in each side? Is that correct? Also how do the dust shields install?

I typed it slower that time, Hope it makes sense. Hahaha.

Cliff notes: I need pics of an installed sport bumper
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1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels

1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels
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Old 02-07-2018, 08:32 PM   #4
71CHEVYSHORTBED402
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Re: Rear sport bumper install

I don't get it. The original bumper mounts to brackets in four spots, one per bracket. If yours are different, a picture might help.
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Old 02-07-2018, 08:56 PM   #5
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Re: Rear sport bumper install

On a Blazer, the inner bolts go through the back of the frame. Only the side bolts have the bracket and I think it does just have 1 bolt per side? The chassis I have in my driveway right now has a welded on bumper from some jackass so that won't help and I can't get to the back of my Jimmy right now because of so many parts from the project stacked behind it.
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Old 02-07-2018, 09:03 PM   #6
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Re: Rear sport bumper install

try the pictues/diagrams in the lmc catalog. they cover truck and subirbans but the parts are labelled by the model in the parts lists.

http://www.lmctruck.com/icatalog/cb/full.aspx?Page=43
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Old 02-07-2018, 09:13 PM   #7
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Re: Rear sport bumper install

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Originally Posted by zosoppp View Post
try the pictues/diagrams in the lmc catalog. they cover truck and subirbans but the parts are labelled by the model in the parts lists.

http://www.lmctruck.com/icatalog/cb/full.aspx?Page=43
if you look at the inset in the top right corner of the rear bumper section on that page you will see how your suburban frame rails end as the inner bumper mount points, and the angle brackets to the outer holes.

It does not appear that the "dust shields," parts #16, 17 or 18, apply to the suburbans.
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Old 02-07-2018, 11:40 PM   #8
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Re: Rear sport bumper install

Let me say first off I know little about your year of Blazer, but since everyone is mentioning Suburbans here is a photo of my Burban with the bumper off and the right side outer bracket missing. I have circled the left side bracket. With the two brackets and the tabs on the frame there are four points to bolt the bumper to the frame. I hope this helps.
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Old 02-08-2018, 12:42 AM   #9
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Re: Rear sport bumper install

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I don't see where the OP mentions Blazer OR Suburban in his post. That is why it is important to state what vehicle you are working with when you start a new thread, even if it doesn't seem important to you. No such thing as posting too much information. It saves a lot of confusion.....

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Old 02-08-2018, 01:01 AM   #10
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Re: Rear sport bumper install

Quote:
Originally Posted by LockDoc View Post
-
I don't see where the OP mentions Blazer OR Suburban in his post. That is why it is important to state what vehicle you are working with when you start a new thread, even if it doesn't seem important to you. No such thing as posting too much information. It saves a lot of confusion.....

LockDoc
It is a 68' LWB that has been cut down to a SWB. The frame is the correct length, but it does not look like the brackets that came with the kit will be long enough, The outer support brackets that go to the outside of the frame are pretty close to the end of the frame and dont go as far back as the LMC picture shows.

I am needing to see a picture of one installed so I can get this figured out and can drill some more holes if needed.
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1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels

1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels
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Old 02-08-2018, 01:34 AM   #11
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Re: Rear sport bumper install

Quote:
Originally Posted by bigbadchev72 View Post
It is a 68' LWB that has been cut down to a SWB. The frame is the correct length, but it does not look like the brackets that came with the kit will be long enough, The outer support brackets that go to the outside of the frame are pretty close to the end of the frame and dont go as far back as the LMC picture shows.

I am needing to see a picture of one installed so I can get this figured out and can drill some more holes if needed.

For the short wheel base conversion 8" has to be cut off of the rear frame rails so I think the holes would have to be re-drilled. Some people get confused about this when modifying the frame and cut 12" off of the rear rails, making them too short. I don't have any pictures of that area but maybe someone else will.....

LockDoc
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Old 02-08-2018, 01:46 AM   #12
bigbadchev72
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Re: Rear sport bumper install

Quote:
Originally Posted by LockDoc View Post
For the short wheel base conversion 8" has to be cut off of the rear frame rails so I think the holes would have to be re-drilled. Some people get confused about this when modifying the frame and cut 12" off of the rear rails, making them too short. I don't have any pictures of that area but maybe someone else will.....

LockDoc
It was 8" I cut off the back, I still have the old pieces of the frame, but it had a full steel bumper on it before and the holes dont line up either. I had the bed on at one point and the frame ended right at the end of the bed and fit perfect. I had to drill the top of the frame for the back two bed bolts.

The bed is off right now and I got the bumper, I am doing the rear camaro gas tank and need to make sure I got all this in the right spot. The bed isnt going back on until after paint.
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1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels

1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels
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Old 02-08-2018, 03:10 PM   #13
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Re: Rear sport bumper install

Quote:
Originally Posted by LockDoc View Post
-
I don't see where the OP mentions Blazer OR Suburban in his post. That is why it is important to state what vehicle you are working with when you start a new thread, even if it doesn't seem important to you. No such thing as posting too much information. It saves a lot of confusion.....

LockDoc
Thank you Doc ,,,, that was my point !!! dude comes blazin in with no info.... thus "HUH?"
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Old 02-08-2018, 03:20 PM   #14
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Re: Rear sport bumper install

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Originally Posted by bigbadchev72 View Post
The bed is off right now and I got the bumper, I am doing the rear camaro gas tank and need to make sure I got all this in the right spot. The bed isnt going back on until after paint.
I recently did a shortbed conversion and also had to remount my bumper. It was a step bumper but same process. I redrilled the holes in the same relative spots they were on the 8" section I cut off. I figured I was good to go but when I tried mounting the bumper it just wouldn't line up quite right. I had to add some adjustment into the new holes to get the bumper in the right spot. I'm thinking you are going to need to either throw the bed back on now or wait until it's back on after paint to get the bumper just right, even if you do figure out where the holes are "supposed" to be.
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Old 02-08-2018, 06:41 PM   #15
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Re: Rear sport bumper install

I recently shortened my truck as well. The holes that I was suppose to make were already there, which was surprising. I haven't installed a bumper yet though.

This is after 8" was taken off the back:
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Old 02-08-2018, 08:32 PM   #16
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Re: Rear sport bumper install

I started the Blazer "fake news" because that was the picture in his avatar. As noted it is helpful to know what he is working on now!
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