Author Topic: Rear bumper delete?  (Read 1283 times)

Fullforce

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Rear bumper delete?
« on: March 25, 2018, 04:03:24 PM »
Just wondering if anyone has ever done a rear bumper delete on a 70-73?
I realize it would take some metal work but I think it would look so much better.
Im doing a somewhat custom build and hate the chrome back bumper since there is no chrome front bumper

Jack

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Re: Rear bumper delete?
« Reply #1 on: March 25, 2018, 07:31:45 PM »
I painted mine black.
It would look cool though, I don't think it can be deleted all together but maybe recess it in.




Regards, Jack

Fullforce

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Re: Rear bumper delete?
« Reply #2 on: March 25, 2018, 09:08:59 PM »
Yea the more I look at it it will be above my level to completely remove it and fill that area in. But I may be able to cut it down and paint it body color like you suggested
Got any pictures of yoursome painted body color?
The rear bumper deffinatly looks like an after thought compared to the rest of the car.
« Last Edit: March 25, 2018, 09:43:24 PM by Fullforce »

NOT A TA

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Re: Rear bumper delete?
« Reply #3 on: March 26, 2018, 07:53:23 AM »
Keep in mind the bumper protects the gas tank as well as adding a bit of torsional strength to the unibody.

I've seen them body color, black, and brushed as well as chrome. I smoothed the bumper bolts and jack slots on mine for a cleaner look. Here's a couple pics, maybe give ya some ideas.









John Paige
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Jack

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Re: Rear bumper delete?
« Reply #4 on: March 26, 2018, 09:38:46 AM »
That looks great and a huge improvement.
Personally I don't like the body color and that's why I went black on the 72 (which is painted dark blue) I kept it chrome on the red 71. I think it works well with some colors but not others (and in my case it was either re-chrome or paint).




Regards, Jack

Re: Rear bumper delete?
« Reply #4 on: March 26, 2018, 09:38:46 AM »

Fullforce

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Re: Rear bumper delete?
« Reply #5 on: March 26, 2018, 10:37:29 AM »
I hate the way it wraps around and sticks out most of all. I could flush the quarter panel and cut the bumper way down to clean the side up more like the camaro. I just can't leave it hanging out like that it looks awful lol

Fullforce

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Re: Rear bumper delete?
« Reply #6 on: March 26, 2018, 01:48:32 PM »
Wow, I must say, I have been searching ALL DAY and havent found 1 single car that has removed or even modified the rear bumper (other than the NOTATA 's shaving of the bolt heads)
Looks like ill just have to post pics when im done..... with ..... something ?? LOL

Jack

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Re: Rear bumper delete?
« Reply #7 on: March 26, 2018, 02:08:12 PM »
Please do, including all steps.




Regards, Jack

Jack

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Re: Rear bumper delete?
« Reply #8 on: March 26, 2018, 02:09:44 PM »
Keep in mind the bumper protects the gas tank as well as adding a bit of torsional strength to the unibody.

I've seen them body color, black, and brushed as well as chrome. I smoothed the bumper bolts and jack slots on mine for a cleaner look. Here's a couple pics, maybe give ya some ideas.


So John, how do you change a flat lol.




Regards, Jack

Box

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Re: Rear bumper delete?
« Reply #9 on: March 26, 2018, 04:59:17 PM »
I think body colour would only work on black, or maybe a dark blue.  Where there's a will there's a way, plenty of people do bumper deletes and do the shaved look on other vintage cars.  From the one shoddy picture I found of one with the bumper removed you might be better off finding someone that specializes in custom metal/body work to do it if you're not at least 90% confident in yourself.  I just remembered where Car Fix did a similar vintage Camaro for Sta-Bil, and they showed some of the work involved.

Yeah they're not identical, but it's close enough to get an idea of what you're getting into if you can find the episodes online.

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Fullforce

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Re: Rear bumper delete?
« Reply #10 on: March 26, 2018, 05:24:23 PM »
I am pretty confident I just need an idea or something to work with, the hardest part looks like it's going to be the quarter panel bulge that sticks out because it wraps around some too

Jack

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Re: Rear bumper delete?
« Reply #11 on: March 26, 2018, 05:47:07 PM »
I think eliminating the returns on the bumper and molding in the bump outs for the return would look very good.




Regards, Jack

Fullforce

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Re: Rear bumper delete?
« Reply #12 on: March 27, 2018, 04:59:39 AM »
When I get time ill make tome templates out of cardboard and post some pictures.

If they dont look good the chrome is coming off my original bumper anyways so I will cut it up and see if I can get it cut down good.

70RAIV455

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Re: Rear bumper delete?
« Reply #13 on: March 27, 2018, 05:14:29 AM »
I Love The Chrome Rear Bumper on my 1970 Trans Am.
Back when I was going to Car Shows I was always put in the Pack of Chevy Cars.
All were in Awe.
A 1970-1/2 Trans Am Look like nothing else in the World.
Even the Corvette Guys Loved it.

No way would I ever take the bumper off mine.

Want to make it stand out ?
What I did is build a Full Drag Race Car I put on the Street.
Able to Street Race a 9-second NMCA Car at night & win on the street.

Make It Loud. Super Loud.
Fire the beast up and the ground shakes.
« Last Edit: March 27, 2018, 05:17:52 AM by 70RAIV455 »

Fullforce

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Re: Rear bumper delete?
« Reply #14 on: March 27, 2018, 05:28:20 AM »
Can't afford all that lol, I can however use my hands and craft something to get rI'd of that horrible rear bumper

Re: Rear bumper delete?
« Reply #14 on: March 27, 2018, 05:28:20 AM »

70_71_78

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Re: Rear bumper delete?
« Reply #15 on: March 27, 2018, 07:42:12 AM »
My favorite is the '76-'78 back bumper, meets all the requirements for lack of "tacked on" look, no odd shapes to accommodate back license plate or other "bump" features, uses the best looking tail lights, (in my opinion), and an almost bullet proof fuel filler flap. What more could you ask for?

Jack

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Re: Rear bumper delete?
« Reply #16 on: March 27, 2018, 08:10:06 AM »
I guess but I really like the 70-73 tail lights.




Regards, Jack

Fullforce

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Re: Rear bumper delete?
« Reply #17 on: March 27, 2018, 10:08:13 AM »
Yep, 70-73 tailights look best and the 76+ bumper looks WAAAAAY better.

nas t eh

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Re: Rear bumper delete?
« Reply #18 on: March 27, 2018, 09:17:01 PM »
All of the crash bumpers look bulky and heavy to my eye, the 76-78 looks slightly better than the 74/5 or 79-81and does match up with the early nose better. But I like that small chrome bumper, use the early 70-72 mounting brackets to tuck it in closer and paint it body color would be all I would ever consider.
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Fullforce

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Re: Rear bumper delete?
« Reply #19 on: April 15, 2018, 07:20:22 AM »
Here is my excellent photoshop lol


https://flic.kr/p/23qUBtN

ta rear mod by johnny anderson, on Flickr
« Last Edit: April 15, 2018, 07:32:18 AM by Fullforce »

Jack

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Re: Rear bumper delete?
« Reply #20 on: April 15, 2018, 07:31:02 AM »
I like it... it would look better if you blend in the spiiler.




Regards, Jack

Fullforce

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Re: Rear bumper delete?
« Reply #21 on: April 15, 2018, 07:35:31 AM »
spoiler or splitter?

Jack

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Re: Rear bumper delete?
« Reply #22 on: April 15, 2018, 07:40:38 AM »
Sorry blame auto correct...
The spoiler and the line that goes down where the bumper use to be.




Regards, Jack

Fullforce

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Re: Rear bumper delete?
« Reply #23 on: April 15, 2018, 08:02:18 AM »
ahhh yes, didnt even think about that but I might consider it since they need some glass work anyways

Aus78Formula

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Re: Rear bumper delete?
« Reply #24 on: April 15, 2018, 08:09:28 AM »
Now it just looks like a massive blank panel where something is missing. Unless you lift the exhaust and poke the tips out through it.

roadking77

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Re: Rear bumper delete?
« Reply #25 on: April 15, 2018, 10:13:31 AM »
Have to agree with Aus on this one. It would look good with exhaust poking thru, or even coming out in the centre with a panel similar to whats on that show Camaro.
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Jack

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Re: Rear bumper delete?
« Reply #26 on: April 15, 2018, 01:59:17 PM »
I agree that would look great.




Regards, Jack

Fullforce

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Re: Rear bumper delete?
« Reply #27 on: April 15, 2018, 05:55:21 PM »
Excellent Ideas guys, that would look awesome!

Fullforce

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Re: Rear bumper delete?
« Reply #28 on: April 15, 2018, 06:46:16 PM »
If you blink you eyes really fast my photoshop doesnt look so bad....

But i can vision it, it will look awesome if there is enough room to run the exhaust pipes

ta rear mod quad tips by johnny anderson, on Flickr

Fullforce

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Re: Rear bumper delete?
« Reply #29 on: April 15, 2018, 08:01:09 PM »
well as I suspected with the leaf springs so close to the fuel tank there is NO way to actually do the exhaust like that without placing a fuel cell in the trunk, witch im not to sure about?

Box

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Re: Rear bumper delete?
« Reply #30 on: April 15, 2018, 08:49:07 PM »
Maybe not that high then, perhaps just do notched cutouts on each side for the tips to kind of go in.  Sorta like how it is on fourth gen Trans Ams:

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Fullforce

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Re: Rear bumper delete?
« Reply #31 on: April 16, 2018, 05:16:20 AM »
Yea thats what I was going for in my edited photo lol

But none the less the fuel tank and leafsprings come right to the bottom of the ...... rear pan? whatever you call that area. so there is 0 room for any exhaust at all. Only was would be a narrower fuel tank or a fuel cell in the trunk.
My fuel tank is beat anyways so I may still look into this.
Has anyone ever mounter a cell in the trunk with a street car?

NOT A TA

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Re: Rear bumper delete?
« Reply #32 on: April 16, 2018, 09:04:00 AM »
I've had fuel cells in the trunk of 2nd gens. Doesn't leave room for much else, like say a spare tire. OK for drag race car but opening the trunk every time for filling the cell gets old fast and you'll be doing it more often because usually you put a smaller fuel cell in than the stock size tank and you don't usually have a fuel gauge so you fill frequently just to be sure you don't run dry. Then you have to be careful filling the cell to prevent dragging the gas station hose on your nicely painted car without hooking it on the spoiler ends. Center of gravity is higher with cell in trunk and if you put the tank over to one side trying to leave some storage space it can also throw off balance so the cell changes handling a little. For safety you should really have the cell isolated from the passenger compartment in case of an accident by creating a firewall at the rear seat back support, especially if you use a cheap plastic cell.

Having done it a few times in the past on street/strip cars I wouldn't recommend putting a cell in the trunk just because you don't like the bumper.
John Paige
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Fullforce

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Re: Rear bumper delete?
« Reply #33 on: April 16, 2018, 12:02:01 PM »
thanks alot for your input, as those are all good points I hadnt even thought about. Im starting to see why noone has modified the rear to delete the bumper now lol.

NOT A TA

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Re: Rear bumper delete?
« Reply #34 on: April 16, 2018, 01:33:50 PM »
thanks alot for your input, as those are all good points I hadnt even thought about. Im starting to see why noone has modified the rear to delete the bumper now lol.

I actually do have a plan for eliminating the bumper as well as the bolt on panel between the tail lights, the plan would only be used on road tracks. It involves a couple aerodynamic ideas I want to test so I did the paint prep in the area normally hidden by the bumper and tail panel just like the rest of the outside of the car so it'll still look pretty in track pics. Eliminating the bumper and tail panel will help offset some of the weight of a rear wing (wing supports will be bolted where bumper brackets bolt on). By reducing the weight the pendulum effect isn't as great when cornering as it would be if bumper & panel were retained. On the street I'll run a bumper.
John Paige
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nas t eh

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Re: Rear bumper delete?
« Reply #35 on: April 16, 2018, 07:02:33 PM »
There are rear suspension set ups for these cars that get rid of the leaf springs. Then you would have room for the pipes.
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Box

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Re: Rear bumper delete?
« Reply #36 on: April 16, 2018, 07:55:57 PM »
For a second gen Camaro but same principle should apply: http://www.superchevy.com/how-to/exhaust/1506-how-to-install-custom-exhaust-system-for-a-second-gen-camaro/

Like nas t eh said, get rid of the leaves and it'll make enough room there around the sides of the tank.

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Fullforce

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Re: Rear bumper delete?
« Reply #37 on: April 16, 2018, 09:48:22 PM »
At the moment a 4 link is completely out of the question.
Trying to do the whole car for under $10,000 and 2 years

So far Im at about $3500 with my cammed Lq9/t56 and Ive got about $500 more to buy until I have all my drivetrain parts.
Then after I get that in and running im going to get heavy on this body work. I could always add rear exit exhaust later.

What would a good running 400 from a 1970 grandprix bring complete? it has #16 heads on it and a good shifting Th400 behind it thats currently in the car now but fixing to get pulled.

scarebird

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Re: Rear bumper delete?
« Reply #38 on: April 16, 2018, 11:43:12 PM »
One of the things I like about the 70-73's is the rear chrome - gives it the period correct Euro GT look Bill Porter was trying to capture back then.

I has the insert painted to "raise the ass" a bit, ala 69 TA and 67-69 SS




Gene-73

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Re: Rear bumper delete?
« Reply #39 on: April 17, 2018, 10:27:34 AM »
I ran across this article recently on a very cool modified second gen.
http://www.streetmusclemag.com/features/car-features/just-fowl-meet-ron-fraziers-1973-ls9-powered-trans-am/

Here's his mod to the rear tail and exhaust cutouts.


Good article but it only wets your appetite.  Would love to see/know more.  Maybe he's on this forum?
Gene


Re: Rear bumper delete?
« Reply #39 on: April 17, 2018, 10:27:34 AM »
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