2012 SD Rear suspension blocks

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Sep 8, 2015 | 11:55 AM

#16

fishbones182

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Joined: Jun 2012

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From: Plant City, FL

2012 SD Rear suspension blocks

I just looked at and measured the blocks on my 2012 f250 4x4 they are 1 7/8 inch front add back so no taper and the truck is extended cab short bed.

Sep 8, 2015 | 11:59 AM

#17

biz4two

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Joined: Sep 2003

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From: Albuquerque

So...reading the updated tsb, I noticed if two-piece or one-piece driveshaft, it mentions...replacement.

Seriously??

Does anybody know why FORD says to replace the driveshaft?? Did the driveshaft change? Is it longer? Is it really necessary?? Just doesn't make sense to me...

I'm currently in the process of pricing the OEM parts...both locally and online. Right now...online is the better of the two.

Thanks,
biz

Sep 8, 2015 | 12:33 PM

#18

fishbones182

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Joined: Jun 2012

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From: Plant City, FL

2012 SD Rear suspension blocks

Quote:

Originally Posted by fishbones182

I just looked at and measured the blocks on my 2012 f250 4x4 they are 1 7/8 inch front add back so no taper and the truck is extended cab short bed.

From what I'm seeing one piece drive shaft should be tapered blocks two piece should be a flat block but that leaves me scratching my head my truck is stock and they are flat?

Sep 8, 2015 | 12:35 PM

#19

fishbones182

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Joined: Jun 2012

Posts: 489

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From: Plant City, FL

2012 SD Rear suspension blocks

Quote:

Originally Posted by biz4two

So...reading the updated tsb, I noticed if two-piece or one-piece driveshaft, it mentions...replacement.

Seriously??

Thanks,
biz

You should be able to use a spacer to drop your carrier bearing to keep the angles correct. I can't see needing a new drive shaft for 4 inch blocks

Sep 8, 2015 | 01:06 PM

#20

Ginther

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Joined: Apr 2007

Posts: 871

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From: Houston TEXAS

Quote:

Originally Posted by fishbones182

You should be able to use a spacer to drop your carrier bearing to keep the angles correct. I can't see needing a new drive shaft for 4 inch blocks

I put 4" Pro-Comp blocks in my 2004 F250. I felt a slight shudder at take off afterwards. Was told to shim the carrier bearing.

If I recall correctly (dont have the truck any more to check) I added about 1/4 - 5/16" shim to drop the bearing down and straighten the angle.

Shudder went away.

Also cant recall if the Pro-Comp blocks were tapered or not.