70 cutlass supreme convertible my first frame off

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Old February 24th, 2020, 09:30 PM
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70 cutlass supreme convertible my first frame off

I will ask forgiveness for my stupidity ahead of time.
Please be patient with me I am getting old and crotchety.
I have posted a few times in other areas it's now time to document my progress.
My donor frame is almost ready to send out for blasting and powder coating.



A couple of body mounts need some TLC








Shock hole out of round

What is the best sequence to get this frame ready?

1. Weld any problem areas (body mounts front shock holes?)
2. Verify frame is straight?
3. Blast.
4. Powder coat.

Are most body shops able to accommodate this or is it best to find a restoration shop?
I am considering trying my hand at welding but I will leave frame issues to the professionals
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Old February 25th, 2020, 08:27 AM
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Well first , there are NO stupid Questions except those that are unasked.
I would think the first order of business is do you have a good frame so for me Verify frame is straight, should be number 1 , I believe there are measurements etc have a look here https://www.chevellestuff.net/qd/frames.htm I believe all A-body frames are the same ( according to their type , convertible, wagon etc) If I am wrong, I am sure someone will chime in LOL. Then I believe it is a toss up between blast and repair? , I would go with repair then Blast or dip? then whatever your finish is going to be, I notice the frame is pitted, so that will show when powder coated, so perhaps you would do some filler then epoxy ? up to you , so from what you started with

1. Weld any problem areas (body mounts front shock holes?)
2. Verify frame is straight?
3. Blast.
4. Powder coat.

I come up with this suggestion



1. Verify frame is straight
2. Weld any problem areas (body mounts front shock holes?)
3. Blast.
4. Paint prep, then paint or powder coat
hope it helps and good luck we will all be following along

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Old February 25th, 2020, 08:46 AM
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What did the donor frame come out of? The current engine mount pads are NOT Oldsmobile. There are differences in the frames. Check Hollander to make sure before you invest in it.
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Old February 25th, 2020, 09:49 AM
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Originally Posted by 66SportCoupe
What did the donor frame come out of? The current engine mount pads are NOT Oldsmobile. There are differences in the frames. Check Hollander to make sure before you invest in it.
nice catch, :-)
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Old February 25th, 2020, 10:26 AM
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Originally Posted by 66SportCoupe
What did the donor frame come out of? The current engine mount pads are NOT Oldsmobile. There are differences in the frames. Check Hollander to make sure before you invest in it.
The frame is out of a 72 Chevelle convertible.
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Old February 25th, 2020, 10:32 AM
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Based on what I saw in Hollanders that frame will not work
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Old February 25th, 2020, 10:52 AM
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arent they the same????

Originally Posted by 66SportCoupe
Based on what I saw in Hollanders that frame will not work
Arent all 68-72 frames the same? because it is boxed? I need to get a Hollanders.
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Old February 25th, 2020, 10:54 AM
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this might help some

http://phscollectorcarworld.blogspot...ing-guide.html
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Old February 25th, 2020, 11:21 AM
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Ok. As I have read. They will interchange. Check and compare front frame horns and rear crossmember behind gas tank
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Old February 25th, 2020, 06:03 PM
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Looks like I may need to use Chevelle rear control arms.

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Old February 26th, 2020, 05:51 AM
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wow....

I am sorry to say I am pretty surprised by this, there are so many things I don't know, is there a difference in size or what is the difference ? just for my own education. anyway saw these
https://www.ss396.com/chevelle/DCK-1...iABEgLL-vD_BwE
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Old February 26th, 2020, 08:09 AM
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From my reading, it appears the upper mount for the control arm is a different shape and the length is different.
I will confirm once I remove the body from the old frame. ( wife asked "how long is this gonna take") I said 6 months to 6 years if I am lucky.
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Old February 26th, 2020, 09:59 AM
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The difference in the upper rear control arms is for clearance for a Chevy 12 bolt rear. If your not using the Chevy 12 bolt then you can use your old upper control arms.
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Old May 10th, 2020, 05:59 PM
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Finally had time to start tearing it down.
I hope I don't bore you with all the pics.






Radiator came out without issue





Broken attached fender nut made removal tricky



Need to get drivers fender off

Need to get drivers door open first


Bumper came right off

Broken radiator support mount bolt. Called it a day
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Old May 11th, 2020, 05:56 PM
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Driver fender is a different year than passenger fender.
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Old May 11th, 2020, 06:26 PM
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Originally Posted by Yellowstatue
Driver fender is a different year than passenger fender.
I never noticed, is that based on the pinch welds vs flat?
I got it in 1983.
I am the second owner, they never mentioned repairs.
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Old May 13th, 2020, 05:58 PM
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Had a couple of hours to see what else I could tear down













There's that tape I was looking for

Got some ugly rusted screws to deal with.

Any tips to remove screws with rusted heads?

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Old June 2nd, 2020, 09:22 PM
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Pulled the console to get at the rusted seat bolts.
Rusted so badly I ended up cutting the nuts with a Dremel cutoff wheel

Ugly rust

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Old June 2nd, 2020, 09:28 PM
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Finally got at the door the was stuck shut.
Removed the panel and after beating the hell out of the door.
I managed to make sure the latch was disengaged and use a pry bar to lift the dor up and out.


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Old June 2nd, 2020, 09:33 PM
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Looks like I will have plenty of welding practice
I see many options for floor pans out there.
Any tips on where to get them?






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Old June 3rd, 2020, 04:34 AM
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TK:
I did a full floorpan replacement on my convertible project It wasn't too difficult, but you have to brace the body well and keep it from twisting. I'm stating the obvious here, but because convertibles don't have a solid roof, the floor is the only thing holding the front & back of the car in alignment. I braced each door opening with some 1-1/2" angle iron and braced across the backseat as well and used the frame mounts as reference points when welding in the new panel. I chose a floorpan from AMD that came with the inner rocker panels, so I drilled out all the spot welds along the top and bottom of the rocker panels. I was vey pleased with the quality of the stamping from AMD.
I also have a solid set of '70 fenders (without the crumple bumps) that need a new home. They're not perfect and will need minor patching behind the wheel openings, but the braces are not rusty. I was going to use them on my '72 project but since they are specific to '70 models, I thought it better to sell them to someone with a '70 model year and I'm now looking for some fenders with the crumple bumps. I'm in Houston, TX so shipping would be required. If you're interested, I can post up some pics - don't want to clutter your build thread with a bunch of unrelated pics.

Good luck with your project.

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Old June 3rd, 2020, 11:20 AM
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nice work so far, I was going to suggest just replacing the areas where it is really rotted, but that one looks pretty well eaten up by metal worm, I keep looking at that lock WTH? never seen a mechanism that rusty, if the latch assembly is the same as a 69? ( I have no idea) I can send you one from an old door I used some sheet metal off of, that door looks fairly fugly though anyway nothing that cant be fixed...
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Old June 3rd, 2020, 05:23 PM
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I have a pair of doors off my 71, hardtop I think they should fit (Verification anyone?)
They have power windows which would be a nice upgrade.
I'll have to pull them from my storage area and check the condition.
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Old June 3rd, 2020, 07:37 PM
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Anyone have experience with https://restorationpartssource.com/s...n-details.html ?
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Old June 3rd, 2020, 10:00 PM
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I haven’t used dynacorn parts but my understanding is that they are top notch I have no experience with RPS sorry
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Old June 5th, 2020, 10:25 PM
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Little progress pulled the gas tank and cleaned the rusty trunk. (gonna need a full replacement of that too)
I was going to ask what else holds the gas tank in after removing the straps, gave it a couple of yanks. took a break.
Then about half a beer later the wife said was that noise your tank falling.








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Old June 6th, 2020, 05:45 AM
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Wow! That is a one rusty hunk of metal. You have your work cut out for you. Nothing like jumping into the deep end on a total frame off resto. I would seriously consider how far you want to go with this, the financial cost along with time it will take to complete. Most importantly, you must consider the ROI or what the car will be worth after you complete whatever you do. Im not trying to discourage you but more prevent you from making a huge financial mistake. You could easily spend $30,000 just in reproduction parts alone, never mind labor. Even if you didn't pay anything for the car, it will still be a significant investment to get it where it needs to be. If the car was a documented 442 w-30 convertible you might break even? If the car was done by a top notch resto shop it would easily cost 80-100k. Depending on the quality of your work, that will also have a lot to do with value at the end. A perfectly restored 1970 convertible IMO is probably worth around 30-40k at best and that might be generous. Who knows where values will go in the future? If you have a lot of extra $ and just want to spend it on something then that is your choice. If you are looking for a learning experience, you will definitely learn a lot about techniques, what it takes, costs and labor. I know the excitement and initial motivation you may have but that soon dissipates after exposing the real burden. Im just trying to prevent you from making the same mistake so many others have made along with myself. JMO.

Last edited by scrappie; June 7th, 2020 at 04:27 AM.
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Old June 6th, 2020, 07:42 AM
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Thanks for the advice.
I know the excitement and initial motivation you may have but that soon dissipates after exposing the real burden.
Yes, especially when you have to fight rust every step of the way.

This project is definitely not intended to be a moneymaker. It's more of a senti(mental) project.
I got this car since shortly after high school. did a mini resto in the early nineties.
Unfortunately, the car sat outside for several years while I was building my garage.
This won't be a show car,. just trying to bring it back to a driver.

I figured if I can handle this mess there won't be much that I can't handle.
Hopefully, I won't break the bank or get discouraged.

With luck, after this project, I will have the skills to do a real resto on a 442


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Old June 6th, 2020, 06:16 PM
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Eh its about the love right! Manytimes the projects i spend hours on dont increase the worth a single cent its the accomplishment and pride in job done well thats the payment.
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Old June 7th, 2020, 05:45 AM
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X2 RetroRanger!! I'm way past the ROI point on my project but still below the cost to purchase a new Camaro or other modern muscle car. Everyone told me it would cost more to "build" my car and suggested finding a better candidate a starting point, but I have enjoyed most of the journey (8 years and counting) and nearly ready for paint. To TkCutlass I say keep at it and enjoy the accomplishment!

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Old June 7th, 2020, 08:22 PM
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I have been working on my project for at least 15 years, searching for parts on eBay / online is a great joy of mine, finding that hard to find part is very satisfying.
Some do this for Money some for the satisfaction of a job well done. In the end most of us just want to keep our old cars on the road and enjoy the Hobby.
whatever your reasons for restoring a car, just remember it is your car and you can do what you want. It can be a very expensive hobby so the better the specimen the less it will cost to complete.
Rust repair is a very time consuming part of this hobby if you are doing the work yourself or very expensive if you pay someone else.
You will get discouraged at times but just take a break and keep creeping along you will get there.
Best of luck
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Old June 8th, 2020, 08:50 PM
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Had a little time this weekend waiting for the load lever to arrive.
Pulled the old speakers and the pump and pistons for the folding top.











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Old June 8th, 2020, 09:19 PM
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Load leveler showed and I decided to take a crack at pulling the engine and tranny together.
based on various reasons including the frame is ready to break in half I have been trying to spend as little time under the car as possible.
With the load leveler I was able to sneak the tranny and engine out without removing the tranny cross member and was able to disconnect the speedo cable as I pulled the combo out.
Almost forgot the kick down cable was able to pull it from the firewall leaving it attached to tranny.

I should of extended the hoist another notch to give it a little clearance.













managed to stay clean except a few drips


tranny plug kept things clean

Until lowering the engine then it puked some antifreeze
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Old June 10th, 2020, 06:18 PM
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Separated the tranny and got the engine on the stand.
Took some work to get the torque converter out felt like the bolts were still attached.
The flywheel seemed to be welded on. half a can of liquid wrench and 20 minutes of prying and yanking it finally came off








The $50 load leveler has already paid for itself. Lining up the engine to the engine stand was a pleasure with the leveler. Got the right height and angle and it slid right in.




Folding hoist helps clear the shop


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Old June 10th, 2020, 07:43 PM
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Good job! I love that your engine stand is compatible with your hoist.
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Old June 10th, 2020, 08:54 PM
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Originally Posted by mrolds69
Good job! I love that your engine stand is compatible with your hoist.
Much easier than when I managed to get the block on that same stand in the bathroom of my condo 30 years ago.
with the use of a pulley, cable, and a few 25lb plates somehow I got the block on the stand, stripped down of heads and intake but quite a task in a 5 x 5 bathroom.
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Old June 11th, 2020, 02:19 AM
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Keep a good eye on the chain links on that leveller. I used what looks like the same or very similar model to remove a 350/TH350 combo from my '72 a couple years ago and was shocked to discover one of the links welds had separated and it was spreading...wasn't far from complete failure.

Ambitious project, love watching the progress!
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Old June 13th, 2020, 08:42 PM
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Removed the cowl screen and was scared of what was rusted under all the crap.
If it was anything like the rest of the car I was expecting swiss cheese.

Luckily not bad at all







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Old June 14th, 2020, 10:00 PM
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Pulled the doors and steering column











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Old June 15th, 2020, 06:16 AM
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Yowza even upunder the dash is rusty!

your really charging into this project keep at it!
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