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Author Topic: rear bumper?  (Read 8180 times)
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imming1965
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« on: July 08, 2015, 06:06:47 PM »

to the experts... are the rear bumpers on a 427 cobra and a 289 cobra the same???

« Last Edit: July 08, 2015, 07:02:34 PM by mrmustang » Logged
mickmate
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« Reply #1 on: November 19, 2015, 10:06:07 AM »

Different bolt spacing from side to side.

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rr64
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« Reply #2 on: November 28, 2015, 10:23:17 AM »

to the experts... are the rear bumpers on a 427 cobra and a 289 cobra the same???

The tubular "Rear Bumper Guard", no, they are different in several ways. I don't have a lot of this type information for 427 Cobras but I borrowed a dirty rusty original 427 Cobra bumper that has not been on a car in decades to compare with three similar Cobra ones. I used the best, least dings, Cobra part for comparison this morning and collected some simple data and pictures. I used fine steel wool and lubricant to clean them up a little for all the handling I was going to be doing.

You can, with a little extra effort install either part on either type car but they won't look exactly the same when you are done. So does this information cover all Cobras and 427 Cobras with tubular rear bumper systems? I don't know. Good question but this is a start.

I revised the data table to show measurements of sleeves done from a different datum with a tape measure to make field studies easier. DC 11-30-15


Dan












« Last Edit: November 30, 2015, 04:01:41 PM by rr64 » Logged

Dan
1964 Cobra owner since 1983, Cobra crazy since I saw my first one in the mid 1960s in Huntsville, AL.
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« Reply #3 on: November 30, 2015, 02:26:03 PM »

Dan

 Chug a Lug

You are a great resource and I for one thank you............

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imming1965
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« Reply #4 on: December 09, 2015, 08:28:21 AM »

yes +1  thanks Dan,

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rr64
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« Reply #5 on: December 10, 2015, 04:29:22 AM »

You are welcome.

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Dan
1964 Cobra owner since 1983, Cobra crazy since I saw my first one in the mid 1960s in Huntsville, AL.
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« Reply #6 on: May 01, 2017, 08:17:37 AM »

I have no idea when anybody was aware that a tail lamp change for 427 Cobras was coming.  If the idea was to create more clearance for round tail lamps and separate reflectors, they failed as clearance to the lenses got worse based on pictures of cars that have not been damaged in the rear.

The details that are visible looking at cars that haven't been bashed in the rear is that the shapes of Cobras and 427 Cobras bodies around the tail lamps are different. The apparent change in front to back dimensions is to get back bumper guard hoop to aluminum body clearance lost when the 427 Cobra shape became more stylized and extended the tail lamp area rearward a little.

Disclaimer. These slides below try to show as close as easy practical three chassis from approximately the same view point.  The alignments arenít perfect but they are good enough to illustrate the three versions for affect. I tried to get the relative scales between pairs close. I made a yellow line trace of the contour of the Cobra skin between bumper mount and tail lamp and copied it over the 427 Cobra pictures to further point out the general difference in shapes of the two type bodies.






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Dan
1964 Cobra owner since 1983, Cobra crazy since I saw my first one in the mid 1960s in Huntsville, AL.
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