Rear Block Install
Tuned
Joined: Jun 2005
Posts: 421
Likes: 1
It's not hard first do you have air tools that makes the job much easyer.
Block the front wheels jack the truck up support the frame with jack stands with the axle unloaded with tires off the axles at least 8 inoff the ground
After removing the rear tires axle remove lower shock mounts put floor jack under one side of the axle make sure the jack can go down at least 6 inch remove u bolts drop axle lower axle install block reinstall new u bolts snug down u bolts not too tight they are going to settle. then do other side once tires are back on the truck and back on the ground toruqe bolts after driving for 100 mile recheck you'r toruqes on the u bolts.
The bolts will work lose at frist recheck the toruqe.
Block the front wheels jack the truck up support the frame with jack stands with the axle unloaded with tires off the axles at least 8 inoff the ground
After removing the rear tires axle remove lower shock mounts put floor jack under one side of the axle make sure the jack can go down at least 6 inch remove u bolts drop axle lower axle install block reinstall new u bolts snug down u bolts not too tight they are going to settle. then do other side once tires are back on the truck and back on the ground toruqe bolts after driving for 100 mile recheck you'r toruqes on the u bolts.
The bolts will work lose at frist recheck the toruqe.
Senior User
Joined: Jul 2002
Posts: 364
Likes: 0
From: Redding, CA
Don't forget to add a plate or two to the carrier bearing hanger. You can get a kit from a 4x4 shop for around $50. You didn't specify the year, but if it's an 05 then there's a plate there, but you'll need to add more.
I'm in the process right now but haven't dialed it in yet. I've added about 1/2" so far and still have the shudder when I mash on the pedal or when towing on grade.
Mike
I'm in the process right now but haven't dialed it in yet. I've added about 1/2" so far and still have the shudder when I mash on the pedal or when towing on grade.
Mike
Senior User
Joined: Feb 2004
Posts: 128
Likes: 2
From: central louisiana
Originally Posted by mwpierson
Don't forget to add a plate or two to the carrier bearing hanger. You can get a kit from a 4x4 shop for around $50. You didn't specify the year, but if it's an 05 then there's a plate there, but you'll need to add more.
I'm in the process right now but haven't dialed it in yet. I've added about 1/2" so far and still have the shudder when I mash on the pedal or when towing on grade.
Mike
I'm in the process right now but haven't dialed it in yet. I've added about 1/2" so far and still have the shudder when I mash on the pedal or when towing on grade.
Mike
Senior User
Joined: Jul 2002
Posts: 364
Likes: 0
From: Redding, CA
rough country said i need 2.5 degree axle shims to put the rear pinion back in the right position
Mike
Tuned
Joined: Jun 2005
Posts: 421
Likes: 1
The drive shaft spacer is only if you have a two piece drive shaft I running a 6.5 lift with no spacer I am running a one piece drive shaft.
If you are running a two piece drive shaft and can not get the vibration to go away you can have a one piece drive shaft made that can use you old yoke and just make it one long one.
If you are running a two piece drive shaft and can not get the vibration to go away you can have a one piece drive shaft made that can use you old yoke and just make it one long one.
Trending Topics
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
For the shudder did you check the alignment from front to back?
If you get the carrier bearing out of alignment it will do that or worse.
My Ford 4" blocks had no taper to them.
When I installed mine I only picked the back tires up about 3" off the ground.
You are only going to raise the truck 2".
I went the extra inch incase I had to roll it back and forth to get the center pin aligned, which I did.
I did not take the tires off, if the axle slipped off the jack the tires stopped it before it mashed me.
Measure the u bolts you have now, get new ones 3" longer than what you have now.
If you get the carrier bearing out of alignment it will do that or worse.
My Ford 4" blocks had no taper to them.
When I installed mine I only picked the back tires up about 3" off the ground.
You are only going to raise the truck 2".
I went the extra inch incase I had to roll it back and forth to get the center pin aligned, which I did.
I did not take the tires off, if the axle slipped off the jack the tires stopped it before it mashed me.
Measure the u bolts you have now, get new ones 3" longer than what you have now.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Senior User
Joined: Feb 2004
Posts: 128
Likes: 2
From: central louisiana
Originally Posted by mwpierson
I believe that's only required if the blocks you installed have NO tapper to them. Ford factory 4" blocks are tappered already. Please correct me if I'm wrong.
Mike
Mike
Posting Guru
Joined: Feb 2003
Posts: 1,054
Likes: 0
From: The Great Plains
I set my jack under the reciever hitch, heated and pulled the nuts off the u-bolts, jacked the hitch, slid the blocks in, set it down, put u-bolts and nuts back on. Didn't need to pull the shocks for mine(just going to a 1-ton block) took all of 30-45 min.
