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While I am asking ... And which carbs were run on the early cars, 500 cfm competition Carters? What numbers would they have been, and were there any deviation on carbs?

1962 Chrysler 300H RB 413 engine AFB-3259S primary mounted in rear and AFB-3258S secondary mount in front. The only carburetor dates codes my research has associated with a new Cobra factory installations so far were in the second half of 1963.

Independent testers reported values for flow between 465 and 475 c.f.m. without quoting test conditions or manifold pressure during testing.

1961-1969 there were very many revisions to main castings and some small parts. The original engineering assembly drawings define many of the changes between 1961 and 1975.

Thanks guys for the explanation, Dan and others. So would a C3 dated aluminum water neck be a part of that early setup?

That is a good question. I do not know when Ford changed from the C3 prefix to the C4 prefix part. Bob Mannel's book might indicate timing. That assumes Shelby American kept the water neck and thermostat when they converted from 4V to 2-4V. Cobra wise 1964 model year and some Cobra only five bolt 1964 engines made with some 1965 model year parts were used.

prior thread

https://www.saac.com/forum/index.php?topic=11191.0

f.y.i...rough cap with threaded section cut off.

https://www.ebay.com/itm/306096993531

Thanks Dan!

You are welcome. Good luck. Originals are out there. Where did them come from? Mostly from original cars that got converted to vintage racers. I have seen a few pass through eBay® before.

Cobra street cars, no. There was one design of cap assembly and it required a steel hose adapter. (There was a design change during 427 Cobra production.)

The AC Owners Club commissioned a reissue of the original design cap assembly some years ago. One of their club members that deals in parts might have one. (The 21st Century made assemblies are not 100% like the originals in the 1960s but the differences do not show when installed and the lid is closed. Buyers must have or make the hose adapte as far as I recall, but that was some years ago now.

I have installed a re-issued cap in an original Cobra before. That was during 2015 and Nick Acton made some hose adapters for me from my reverse engineering drawings.

Might be CSX2373. See Registry.

Fuel filler over the left rear wheel, narrow extension of right rear wheel arch, right hand drive...I would say it is a modified AC ACE European market car.

A friend of mine just finished restoring a Lotus 7 and it came with the pictured heater.  He didn't
want to install it.    He mentioned it is also fitted to early Cobras.   Can someone verify that for him?
If so, what would be its value?   He doesn't want to keep it.

It is not a Cobra system. Same brand as used in Cobras but different in many ways.

Excellent work. Thank you for all you do.

Both the link and the *.pdf file just worked for me 3:46 pm mountain time Friday 12-20-2024.

Dan

I just sent a PM on the parts I am interested in.
Dan

I can only report what was in the 1965 Shelby American parts list. The last time I replaced one in a Cobra was in the mid-1980s.

Driven Gears (installed on speedometer cable) Group 17271
Driven gears were selected by gear count depending on differential gear ratios and the diameters of original equipment tires.  Cobras street and race had variables in deferential gearing and tire diameters 1962-64 (even "1965" Cobras were built with 1964 model year differentials and tires).  Part numbers listed in the May 31, 1965 Shelby American service parts book include:

COAA-17271-A      17 tooth Nylon
COAA-17271-H      21 tooth Nylon
COAA-17271-J        18 tooth Nylon
COAA-17271-K        19 tooth Nylon
COAA-17271-N            20 tooth Nylon

Hi, Dan,

I know this is an old thread. I noticed that there are no dimensions on the photo above, though lines were drawn in over the clutch forks. Is there an obvious identification approach?  Perhaps that is a dumb question...  I have a fork with no numbering, and I am trying to identify its application, early or late. They look to be about the same overall length.  Do you have the measurements or other suggestions? 

Thanks much!

I did not put dimensions on the slide on purpose. I do not think I even kept tape measure dimensions. The parts are so different in shape between the pivot point and rod tip pocket, that has been sufficient to distinguish 1963-64 versus 1965 and later designs.

Dan

New original Cobra or new original 427 Cobra, makes a difference. Sold as service replacement or new car version(s)?

Yes, used original production sets marked 1963-64 for Cobras have been for sale before and original production sets for 427 Cobras used and new old stock have been for sale before.

In all cases the public offerings were so far apart in years I would not imagine what a "market" valve currently might be. Originality plus condition would be the key factors in my opinion. Car owners have tracked down used sets for specific cars for decades and except in my case, I have no idea what pricing was in private sales.

Dan