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New Mexico WTT 3.55 Diff from 18 Auto

BadGTR

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Hello,

I have a 3.55 diff with about 1500 miles in my car on the a10 setup. I am looking for a 3.15 from a 18/19 a10 setup. Would like to trade straight across.
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BadGTR

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Is there a difference between 18/19 and earlier years?
After researching a bit. Looks like the difference is the flange from Manual to Autos. I believe a pumpkin from a auto car will work on 15-19 and same for the Manuals.
 

Rash

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Just curious - Why do you want to swap?
 
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BadGTR

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Just curious - Why do you want to swap?
I am boosted on e85 now and have the suspension all modded too. Yet traction is still limited. Going to the 3.15 to help make 1st gear usable.
 

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69mach1-395

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But wouldn't you want an iron housing?
 
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BadGTR

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But wouldn't you want an iron housing?
I was searching for diffs and read that Ford switched to an aluminum because it is stronger, lol.
 

rii_505

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i'm interested.... if you're willing to ship :S
 

69mach1-395

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I was searching for diffs and read that Ford switched to an aluminum because it is stronger, lol.
Really? I thought only the 3.15s were aluminum. If they are stronger and lighter, then why only one ratio. I'd like to see something where the ford engineer supports that statement.
I have seen an iron case 3.15 advertised here a while back...
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