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Old 10-25-2009, 07:44 PM   #1
photocliff
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Default Shelby drop??

Is the shelby drop where the upper control arms are lowered by 1 inch? Does it raise the front end of the car and what would i do to compensate in the back end?
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Old 10-25-2009, 07:54 PM   #2
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Yes it is where the UCAs are dropped 1 in. No it does not raise the front end up. You will need an alignment afterward though. You can get the specs from this site.
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Old 10-25-2009, 11:27 PM   #3
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Thanks, This is something I am going to do
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Old 10-25-2009, 11:30 PM   #4
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Quote:
Originally Posted by photocliff View Post
Is the shelby drop where the upper control arms are lowered by 1 inch? Does it raise the front end of the car and what would i do to compensate in the back end?
Best thing since sliced bread. The operation lowers the front end about 5/8". That's not why you do it, though, the gain is in the change in geometry.

http://site.cobranda.com/tech/aarms.pdf
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Old 10-26-2009, 12:44 AM   #5
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Shelby drop + roller perches = win
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Old 10-26-2009, 06:26 AM   #6
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i love the change in handling on mine. it seems to settle into corners alot faster and feel more stable. the tires dont squal as easily while cornering. the stance is a great bonus.
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Old 10-29-2009, 08:04 PM   #7
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The Shelby drop requires a 17/32" drill bit for the hole.
That is only 1/32" above a 1/2" bit,so it is not much.

Can you just VERY carefully hog the hole out just with the 1/2" bit or use a file to get the hole big enough?

The only 17/32" bit I can find are 1/2" shanks and I don't have a 1/2" drill, not to mention they cost around $15 for a bit I will only use 4 times.

I cannot see that it would make that big a difference to the front end if you just hog the hole a little bit with the 1/2" drill bit or use a file to get that lousy 1/32".
Anyone else do this?

Lynn
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Old 10-29-2009, 08:21 PM   #8
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a $15 drill bit probably wont last 4 holes......
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Old 10-29-2009, 08:26 PM   #9
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I used a 1/2" bit on my 67 to do the drop.
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Old 10-29-2009, 09:17 PM   #10
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When you need to drill a big hole in heavy steel, start small and work your way up. Drill a 1/8th pilot, 1/4" and so on. This will make your pricey 1/2" last a whole lot longer. Also you can oil the bit as you drill.
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