C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

Rear bumper replacement ?s

Thread Tools
 
Search this Thread
 
Old May 5, 2006 | 01:39 PM
  #1  
JustinGJ's Avatar
JustinGJ
Thread Starter
Racer
15 Year Member
 
Joined: Mar 2005
Posts: 316
Likes: 0
From: Grand Forks North Dakota
Default Rear bumper replacement ?s

Lots of these threads lately, I know, but I have a couple quick questions. I'm installing a truflex rear bumper on my '76. Do I need the factory taillamp mounting pieces bolted to the metal bumper or are they left off since the taillamps are supported by the fiberglass bumper now? Also, just to make sure I have no fitment issues should I remove the shims from the rear metal bumper and mount it solid to the supports since it's no longer used for aligning the taillamp mounts? All my shims and the bolts are missing from the pass side metal bumper mount, so this would make it a little easier for me if I could just bolt it directly to the mounts with no shims.
Reply
Old May 5, 2006 | 01:44 PM
  #2  
NHvette's Avatar
NHvette
Le Mans Master
20 Year Member
 
Joined: Jun 2002
Posts: 8,339
Likes: 24
From: I can walk to MA
Default

If it's anything like the 75 Ecklers fiberglass one I had,
yes - remove thye taillight supports. You might also need
to remove the aluminum support pieces that bolt to the bumper bar.
I'll try to find a pic of what I had underneath ... pretty sure I can dig one up.
.. or not. I looked and can't find a good pic. I'll check at home this weekend.


Last edited by NHvette; May 5, 2006 at 02:15 PM.
Reply
Old May 5, 2006 | 01:48 PM
  #3  
JustinGJ's Avatar
JustinGJ
Thread Starter
Racer
15 Year Member
 
Joined: Mar 2005
Posts: 316
Likes: 0
From: Grand Forks North Dakota
Default

Yes, I was thinking about that piece too, the one directly behind the badge/letters on the original bumper? How well was the fit on your bumper, any big problems? Thanks for the quick reply.
Reply
Old May 5, 2006 | 02:19 PM
  #4  
NHvette's Avatar
NHvette
Le Mans Master
20 Year Member
 
Joined: Jun 2002
Posts: 8,339
Likes: 24
From: I can walk to MA
Default

The previous owner installed it, so I cannot comment on the install.
I only removed it. I still have the 75 carcass in the driveway, so
I will try to get a fresh pic tomorrow ... Monday at the latest.

Reply
Old May 5, 2006 | 06:02 PM
  #5  
crazywelder's Avatar
crazywelder
Drifting
15 Year Member
Top Answer: 1
 
Joined: Jan 2006
Posts: 1,944
Likes: 22
From: Yooperville MI
Default

If you eliminate the tail light brackets, you eliminate an important mounting area for the bumper and place the entire weight of the bumper on the rear body flange alone. The deck and lower quarter panels are supported by the bumper. Take the extra time to make the tail light brackets fit the new bumper and you will have a much better quality job.

The picture shows what you should have with the bumper cover removed. Depending on the bumper mold you have, you might need to remove the guard supports, license pocket supports, and horizontal rubber strip. You don't want anything loosely rubbing against a fiberglass bumper.

If needed, you can modify the tail light brackets to fit the fiberglass bumper. Readjust the aluminum reinforcement by loosening the 8 bumper shock bolts if the new bumper doesn't fit properly at first, but don't tighten until the job is done, just snug them.


Last edited by crazywelder; May 5, 2006 at 06:05 PM.
Reply
Old May 6, 2006 | 11:15 AM
  #6  
Paul Borowski's Avatar
Paul Borowski
Team Owner
Supporting Lifetime Gold
25 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Aug 2000
Posts: 21,453
Likes: 461
From: Massillon,Ohio USA
2020 C3 of the Year Finalist - Unmodified
Cruise-In VI Veteran
St. Jude Donor '08-'09-'10-'11-'12
Default

Originally Posted by ahoover
If you eliminate the tail light brackets, you eliminate an important mounting area for the bumper and place the entire weight of the bumper on the rear body flange alone. The deck and lower quarter panels are supported by the bumper. Take the extra time to make the tail light brackets fit the new bumper and you will have a much better quality job.

The picture shows what you should have with the bumper cover removed. Depending on the bumper mold you have, you might need to remove the guard supports, license pocket supports, and horizontal rubber strip. You don't want anything loosely rubbing against a fiberglass bumper.

If needed, you can modify the tail light brackets to fit the fiberglass bumper. Readjust the aluminum reinforcement by loosening the 8 bumper shock bolts if the new bumper doesn't fit properly at first, but don't tighten until the job is done, just snug them.

, but be careful about using the taillight supports. The TrueFlex bumper is rigid enough to hold the weight of the taillights compared to the original pliable urethane bumper. I tried using these taillight supports and found out as you tighten down the taillight, IT WILL HAVE A TENDENCY TO "FLARE" THE BUMPER WIDER THAN THE CAR!!! I ended up NOT using them on my '75.
Reply
Old May 6, 2006 | 12:27 PM
  #7  
JustinGJ's Avatar
JustinGJ
Thread Starter
Racer
15 Year Member
 
Joined: Mar 2005
Posts: 316
Likes: 0
From: Grand Forks North Dakota
Default

Hmm, guess I should have read the directions, it says right on there not to use them as it can warp the fiberglass, just like Paul said. Hopefully fitting it on wednesday, I'll be sure to post some pics when it's all said and done. Thanks again for the help.
Reply

Get notified of new replies

To Rear bumper replacement ?s





All times are GMT -4. The time now is 11:30 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE