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

Rusty Frame

Thread Tools
 
Search this Thread
 
Old Sep 26, 2011 | 09:30 PM
  #1  
Greasy Rocker's Avatar
Greasy Rocker
Thread Starter
6th Gear
 
Joined: Sep 2011
Posts: 6
Likes: 0
Default Rusty Frame

Hi
I just finished introducing myself in that forum, and I already have a bad question. They redirected my here

I have a 75 Vette, that has a rust problem. Here is the question I posted in the intro forum

"I had an opportunity to get a closer look at the car today. Is it worth continuing the project if I have to replace the frame and birdcage? How much would it cost to get replacements? Would a '71 frame fit my '75?"

Any thoughts?

Thanks
Reply
Old Sep 26, 2011 | 09:59 PM
  #2  
markids77's Avatar
markids77
Melting Slicks
 
Joined: Jun 2009
Posts: 2,709
Likes: 3
From: Savannah GA
Default

1975s are not particularly sought after in the"collectible" market... they're to be driven and enjoyed. Frames are (relatively) inexpensive, pretty available and body mounts, floors and the like are available as well. Re-introduce yourself here, describe the car (PHOTOS!!!!!), and give us an idea of your automotive skill set, workspace, motivation (is this a family heirloom???), etcetera... we're here to help, advise and kibitz. If it was free or mostly so, or if it was your Dad's dream car, or you lost your virginity in it it might mean a bit more to you than the pure market value.
Reply
Old Sep 26, 2011 | 10:02 PM
  #3  
dboz's Avatar
dboz
Burning Brakes
10 Year Member
 
Joined: Jul 2005
Posts: 866
Likes: 1
From: Northeast Ohio
Default

The rear section of the frame (last 12 inches or so to give room to make it strong) would need grafted onto the 71 frame IIRC. The rest would work fine.

If you get it cheap enough, anything is fixable. Just keep in mind a 75 is never going to be worth more than about 10-15k IMO if really nice. It will probably cost double that to do all that work and replace what needs replacing. Essentially a frame off and body off cage restoration. Basically you would be rebuilding the car from nothing.

Last edited by dboz; Sep 26, 2011 at 10:04 PM.
Reply
Old Sep 26, 2011 | 10:27 PM
  #4  
72LS1Vette's Avatar
72LS1Vette
Safety Car
20 Year Member
 
Joined: Aug 2001
Posts: 4,883
Likes: 11
From: North Easton Mass
Default

If you have access to a good condition 71 frame you could sell it and buy 2 good condition 75 frames. The chrome bumper frames are much more scarce and it would be a total waste of a 71 frame to cut it up and modify it when 75-compatible frames are much more readily available. In other words, don't spend the time and money to hack up a 71 frame when you can buy a 75-compatible frame for much less $.



Rick B.
Reply
Old Sep 27, 2011 | 10:42 AM
  #5  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Default

Originally Posted by Greasy Rocker
...Would a '71 frame fit my '75?"...
http://www.71corvette.com/frames.html

Reply
Old Sep 27, 2011 | 10:55 AM
  #6  
Mike Ward's Avatar
Mike Ward
Race Director
10 Year Member
 
Joined: Jul 2001
Posts: 15,892
Likes: 42
Default

To replace both the frame and birdcage is financial suicide. Replacement components alone might run 5K or more. If that doesn't bother you, have fun.
Reply
Old Sep 27, 2011 | 11:30 AM
  #7  
BBCorv70's Avatar
BBCorv70
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2007
Posts: 3,189
Likes: 111
From: Tolland CT
Default

A frame replacement is essentially a very large disassemble/reassemble project. Purely mechanical. To replace any portion of the birdcage gets into some serious disassembly of the body and in some cases precision welding. A large birdcage repair or swap is a HUGE job requiring some pretty solid auto body repair skills. Any extensive work needed to repair the birdcage becomes cost prohibitive unless you can do the work yourself. There's no way this could be justified if market value is considered. OK if you enjoy a challenge, bring another back from the brink.
Reply
Old Sep 27, 2011 | 12:57 PM
  #8  
Greasy Rocker's Avatar
Greasy Rocker
Thread Starter
6th Gear
 
Joined: Sep 2011
Posts: 6
Likes: 0
Default

HI Guys

Thanks for all the brutaaly honest responses - that is why I asked.

In response to Markids77 - here are some photos of the poor beast





I never intended to buy a 'Vette, but I was stupid enough to searcg kijiji for cars for less than $2K, and this one jumped out.

And here is a link to my previous project.

http://www.locostusa.com/forums/view...php?f=35&t=775

I like to think I am fairly handy in the garage, and while I am not doing this to enter Barret Jackson I haven't got funds to burn. The car was $1200 with a rebuilt engine, almost complete interior and solid front underbody. The '71 frame is $900, (the change in rear x-member is a bit more extensive than I had hoped) and I maybe able to pick up a birdcage for $400. So for $2,500 I think I have a solid vette, in 3 pieces that needs a lot of TLC but hopefully not too much more $$$$.

I have no sentimental attachment to the car, my wife seems fairly excited about it though. If anyone out there knows where I can get a better start for $2,500 I am all ears. If anyone knows where I can get a 75 frame for less than $900, I am all ears.

This is a challenge no doubt. I want to explore all my options before quitting.

Thanks again, and keep the comments coming.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-1

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-4

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-5

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-6

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-9

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
Old Sep 27, 2011 | 01:42 PM
  #9  
joewill's Avatar
joewill
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2007
Posts: 4,452
Likes: 327
From: Indy Indiana
Default

i would get out... if that car was only 2K, then you should get at least that when selling..
Reply
Old Sep 27, 2011 | 02:08 PM
  #10  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Default

How about pics of the rust issues which concern you? How do you know you actually need a frame and a birdcage?

Reply
Old Sep 27, 2011 | 08:21 PM
  #11  
Greasy Rocker's Avatar
Greasy Rocker
Thread Starter
6th Gear
 
Joined: Sep 2011
Posts: 6
Likes: 0
Default

I will try and get pictures, but in summary:

On the passenger side the body mount at the base of the A pillar is a bit rough, the triangulation at the base of the windscreen is gone, I think the top and bottom corners on the windshield frame have been replaced.

On the drivers side the entire frame from the A pillar to the rear wheel is rotten, the base of the windshield is rotten, I think the windshield vertical pillar has been replaced (badly). The windscreen doesn't seem to fit very well, lots of sealant in the body corners

Neither of the rear body mounts are attached

I have found (on this forum ) a 77 frame and a 74 birdcage in good condition for what I think are reasonable prices.

May involve some road trips though
Reply
Old Sep 27, 2011 | 08:40 PM
  #12  
Scotty76's Avatar
Scotty76
Instructor
 
Joined: Aug 2011
Posts: 155
Likes: 0
Default

Greasy:

I bought my 76 for 3250.00
The frame is good, slight rust on windshield pillars.
Motor is 30K fresh, runs and does not smoke.
Bumpers are toast, body is near perfect. Seats and rugs need new.

I will be lucky to only have 7-8K total investment when done and my car will only be worth that amount.

There are better cars than yours available for less than 3-4K.

I would part the thing, make a little more than you spent and put it down on a little better car. IMO.
Reply
Old Sep 27, 2011 | 08:59 PM
  #13  
Roco71's Avatar
Roco71
Melting Slicks
 
Joined: Jul 2009
Posts: 3,264
Likes: 3
From: Vero Beach FL
Default

If you have to replace the birdcage its not really worth the effort unless you are looking for a challenge. People climb mountains and just have a photo of them selves standing at the top when their done. When your done with this at least you will have a car. It will amaze you how fast these projects consume cash. The obvious things you count on are one thing but there will be more.
Reply
Old Sep 27, 2011 | 09:02 PM
  #14  
markids77's Avatar
markids77
Melting Slicks
 
Joined: Jun 2009
Posts: 2,709
Likes: 3
From: Savannah GA
Default

I think you could easily double your car/parts cost in repair materials and sundry other items required to complete your rehab. For instance, I have $200 just in primer alone on my 1977 project.Even if you hit eBay up for a $50 gallon of lacquer based primer surfacer and a $80 gallon of PPG Omni acrylic enamel single stage (these are real, current listing prices BTW) you will still have about $400 or so in paint materials and sandpaper etc. Add another $100 to $150 for fillers, epoxies and glass for body repairs. You will require some pretty exotic adhesives if the cage/nose get replaced... bonding agents and the special mixing guns to apply them are spendy too.

Visit some supporting vendor's sites and price out the bad body mount replacements, the rubber and hardware kits to bolt the tub back down with, a latex body seal kit and whatever else you have noticed so far the thing might require when you completely disassemble the chassis... like new shocks, suspension bushings, front end/steering componentry. If the car has sat for a few years figure rebuilding the brake system in at the front end so there's no bad surprises later.

All that said, don't allow all this to scare you off of this project if you love the car... but be darned certain you love the car because you will open the biggest, nastiest can of worms you can imagine if you botch the job here. Birdcage replacement surgery is a huge undertaking in time, and physical labor. It will start with building both a body lift structure, and a dolly to put the shell on while you work on it and the frame. You need dry storage for at least 3X the space the car occupies now while it is apart and a heated workspace free of the wife's ride and the kid's bikes all winter long so consider that as well. You will end up with a hand built hot rod which you will know down to the last nut... and be a happy guy... if you love it enough to get all the way to the end.
Reply
Old Sep 27, 2011 | 09:25 PM
  #15  
markids77's Avatar
markids77
Melting Slicks
 
Joined: Jun 2009
Posts: 2,709
Likes: 3
From: Savannah GA
Default

I should have read your link before composing the last post... it seems you have the logistical thing fairly well in hand. Nice work on the Locost "Lotus"!
Reply
Old Sep 27, 2011 | 09:42 PM
  #16  
RobRace10's Avatar
RobRace10
Melting Slicks
20 Year Member
All Eyes On Me
Photogenic
Liked
 
Joined: May 2005
Posts: 2,486
Likes: 71
From: Elkhart Lake, Wisconsin
Default

As much as I like projects, I would not tackle this car because it will be worth less than you have in it not counting your labor when you are done. If this were a chrome bumper or a c2 then yes, but the reality is for what you will spend you are better off with a better car for a few thousand more.
Reply
Old Sep 27, 2011 | 09:48 PM
  #17  
mikem350's Avatar
mikem350
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2006
Posts: 3,105
Likes: 96
From: Sunrise FL
Default

Originally Posted by RobRace10
As much as I like projects, I would not tackle this car because it will be worth less than you have in it not counting your labor when you are done. If this were a chrome bumper or a c2 then yes, but the reality is for what you will spend you are better off with a better car for a few thousand more.


Go show your wife a nicer Vette...both of you will be happier in the long run!
Reply

Get notified of new replies

To Rusty Frame

Old Sep 28, 2011 | 08:58 AM
  #18  
69MA's Avatar
69MA
Instructor
10 Year Member
 
Joined: Apr 2004
Posts: 201
Likes: 1
From: Taunton Ma
Default

If that's the rust that you can see there is bound to be more. 75's are nice cars but it really doesn't make sense to go forward with this project. I think that i would part it out. You will get all of your money back plus. Also during this process you will be able to identify all the problem areas if you decide to purchase another vette.
Reply
Old Sep 28, 2011 | 09:40 AM
  #19  
chstitans42's Avatar
chstitans42
TheCorvetteBen
Supporting Lifetime
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2007
Posts: 4,987
Likes: 144
From: Van Alstyne, TX
Default

I don't know where you are located, BUT here in Texas I have a nice straight 75 frame and a nice rust free 79 birdcage for sale. No rust or issues on either piece. You cant beat texas metal that's for sure. PM me if interested.

BTW, The above posters are correct. don't kill a 71 frame for a 75 vette. There are too many 75 frames around. Why not just use a correct one?
Reply
Old Sep 28, 2011 | 12:34 PM
  #20  
Raphiki's Avatar
Raphiki
Melting Slicks
Supporting Lifetime Gold
St. Jude 10 Year Donor
Conversation Starter
Liked
Loved
 
Joined: Jun 2005
Posts: 2,239
Likes: 74
From: Palatine, Peoples Republic of Illinois
St. Jude Donor '09-'10-'11-12-'13-'14-'15-'16-'17-‘18
NCM Sinkhole Donor
Default

Sounds like you would be better off finding another vette with a good frame and birdcage and using this one as a donor car. Maybe something with some body damage or bad parts where this is good.
Reply



All times are GMT -4. The time now is 08:06 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE