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 3Likes
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1
Post By mrmustang
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1
Post By NROTOXIN
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1
Post By Cooper427SC66
09-19-2022, 07:55 PM
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CC Member
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Join Date: Jan 2022
Cobra Make, Engine:
Posts: 13
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Not Ranked
Cobra Chassis measurements
I’m keen to start to fabricate my own Cobra chassis but I have no measurements to begin with. I’m mainly looking for the main chassis beams specs i.e the length and distance apart they are. I want to use 4” round tube and I will be using Jag front and rear suspension with a 429 BBF engine. I have tried looking it up on the internet but haven’t come across much. I hope you guys with experience can help me out.
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09-20-2022, 04:28 AM
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CC Member
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Join Date: Nov 2003
Location: New Britain,
CT
Cobra Make, Engine: Size 10 Feet
Posts: 2,993
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Not Ranked
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09-20-2022, 07:15 AM
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CC Member
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Join Date: Jan 2022
Cobra Make, Engine:
Posts: 13
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I will post in this forum. But may I ask why it’s a better forum to post this question?
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09-20-2022, 07:52 AM
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CC Member/Contributor
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Join Date: Feb 2000
Location: Greenville,
SC
Cobra Make, Engine: 70 Shelby convertible, ERA-FIA, 66 mustang convertible, mystery Ford powered 2dr convertible
Posts: 12,627
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Not Ranked
Cobra Restorers offers or offered a full set of chassis plans a few years ago.
https://www.csxparts.com/
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First time Cobra buyers-READ THIS
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09-20-2022, 08:34 AM
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CC Member
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Join Date: May 2002
Location: SF, Bay Area,
CA
Cobra Make, Engine: SPF832, 466cid
Posts: 496
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Not Ranked
This may be way more than you are looking for....
Construction Drawings - 427 Cobra
https://www.chuckcobra.com/construct...awings-04.html |
09-20-2022, 09:00 AM
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CC Member
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Join Date: Oct 2017
Location: Baysville,
Ont
Cobra Make, Engine: Mine, small block FORD
Posts: 228
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Hey there,
I can also highly recommend Chuck's drawings, I am using a set myself for a 289 build. He has done a tremendous amount of work on these, check them out. Sometimes you do get what you pay for.
If you really are not concerned about originality then check out fasterpatricks build
Fasterpatricks Custom Cobra
There are some great ideas there! So just get yourself some 4" tube, set them about 21" apart on the table and get to work. 
__________________
Yes, I know,....... but it's mine you see..... 
Perhaps he was always a shyster, but we just chose to over look it for awhile. 
You build what you like and I will build what I like...it's all good 
You know that guy,
The one in the neighborhood who likes to hang around the garage while you are working and talk about back when he had that killer 1977 Chevy Mustang
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09-20-2022, 10:16 AM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302), HTM111 (427 Comp), CSX2375R (289 Comp) and Scratch 427 S/C
Posts: 18,797
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Not Ranked
I like Chucks.....
Way worth the $, if the funds come hard you may want to rethink this whole adventure as I know what it costs to do this from scratch.......
Remember, Cobra parts are regular priced parts x 5...  |
09-20-2022, 06:25 PM
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CC Member
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Join Date: Jan 2022
Cobra Make, Engine:
Posts: 13
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I found Chuck’s website last night and I’m going to contact him about his drawings. Plus the idea of building my Chassis of an original car is an opportunity that appeals to me.
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09-20-2022, 06:39 PM
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CC Member
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Join Date: Jan 2022
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Great to hear feedback on Chuck’s drawings. It was a question I asked myself “ how detailed are they for the money his asking” so reading that your using them for your car is great.
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09-20-2022, 06:43 PM
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CC Member
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Join Date: Sep 1999
Posts: 354
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At some point someone was selling bluepints to build a cobra chassis and there were some errors in the prints, nothing that could not be ground off or cut off and rewelded. But they were there I can't remember who, although there are not that many who offer those buleprints.
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09-20-2022, 06:44 PM
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CC Member
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Join Date: Jan 2022
Cobra Make, Engine:
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Quote:
Originally Posted by old willy
Hey there,
I can also highly recommend Chuck's drawings, I am using a set myself for a 289 build. He has done a tremendous amount of work on these, check them out. Sometimes you do get what you pay for.
If you really are not concerned about originality then check out fasterpatricks build
Fasterpatricks Custom Cobra
There are some great ideas there! So just get yourself some 4" tube, set them about 21" apart on the table and get to work. |
Great to hear feedback on Chuck’s drawings Old Willy. It was a question I asked myself “ how detailed are they for the money his asking” so reading that your using them for your car is great. |
09-20-2022, 06:51 PM
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Join Date: Jan 2022
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Quote:
Originally Posted by kanuck
At some point someone was selling bluepints to build a cobra chassis and there were some errors in the prints, nothing that could not be ground off or cut off and rewelded. But they were there I can't remember who, although there are not that many who offer those buleprints.
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This is a concern for sure, even more so when you pay for those plans. I was hopeful of weeding out this by posting the question here. |
09-20-2022, 08:13 PM
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CC Member
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Join Date: Aug 2009
Location: Adelaide,
SA
Cobra Make, Engine: AP 289FIA 'English' spec.
Posts: 13,142
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Greetings Cooper.
I see that you're located in WA (Australia, not US). Are you in touch with the local Cobra Club? The Perth guys/gals visited us here in Adelaide several years ago; they're a nice group.
Anyway, information from a club local to you could be beneficial regarding registration requirements. I mention that because building your own chassis to emulate the original Cobra's chassis might cause extra problems with compliance at road registration time.
If you contact your state registration guys - they are the people who will check your car's compliance for road registration - that would be a good idea with you building your own chassis.
Best of luck, and please post updates here often
Cheers!
Glen
Last edited by xb-60; 09-20-2022 at 10:14 PM..
Reason: edit
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09-20-2022, 10:19 PM
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CC Member
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Quote:
Originally Posted by xb-60
Greetings Cooper.
I see that you're located in WA (Australia, not US). Are you in touch with the local Cobra Club? The Perth guys/gals visited us here in Adelaide several years ago; they're a nice group.
Anyway, information from a club local to you could be beneficial regarding registration requirements. I mention that because building your own chassis to emulate the original Cobra's chassis might cause extra problems with compliance at road registration time.
Contact with your state registration guys - the people who will check its compliance for road registration - would be appropriate as well particularly as you are building your own chassis.
Best of luck, and please post updates here often
Cheers!
Glen |
I was looking at getting a G Force Cobra and Rob is super helpful and has a lot expertise with compliance procedures so I will chat to him. I plan to contact the local Cobra Club to see if those guys have any experience or contacts. I will also be contacting an engineer for the requirements. So in short I have a ridiculous amount of hoops to jump through. |
09-25-2022, 12:02 AM
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CC Member
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Join Date: Jan 2002
Location: Northridge,
CA
Cobra Make, Engine: Arntz Cobra
Posts: 1,837
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My Arntz Cobra was designed and built by Ron Butler who was a fabricator and crew chief for Carroll's race team. It is built with a lot of extra strength. After more than 30 years of work on my car and studying every other Cobra, I have another answer.
Check out the DAX Cobra built in England. Their frame allows the seats to set lower which would be very nice since my head is above the windshield. Their suspension setup is unique and much better than any other race car at maintaining tires camber angle through curves.
RS
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09-25-2022, 06:49 AM
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Location: Cape Town, South Africa/Mainz, Germany,
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Quote:
Originally Posted by Cooper427SC66
I’m mainly looking for the main chassis beams specs i.e the length and distance apart they are.
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The short answer is:
1'8"
8'¾"
First crossmember at
7 ⅛"
Second (under oil pan)
3 ⅞"
Third (transmission)
5' 3 3/16"
4th, from the rear
1' 1 ⅜"
The end piece ads
5 ⅜"
Try to get the prints from Cobra Restorers for $200 or Chuck's full set for all the details.
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