Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

Rear Leaf Spring block question

Thread Tools
 
Search this Thread
 
Old Jul 6, 2014 | 10:46 AM
  #1  
KIKKUP's Avatar
KIKKUP
Thread Starter
|
Elder User
Joined: Sep 2012
Posts: 654
Likes: 2
From: The Lone Star State
Rear Leaf Spring block question

I installed my 6" skyjacker kit but I think I may have included a non factory block the PO already had installed. I'm thinking it may have already had a 2" lift kit installed. I should have known better when the Skyjacker provided U-Bolts were not long enough and reused the ones I had.

I'm almost certain but can anyone confirm if this aluminum block (under the bump-stop block) is not a factory installed FORD item?




Here is a few other photos:




The rear seems to sit way to high. Yes, I need to paint my JY tailgate.





Not really a great way to measure... especially since this tire was a bit low but it seems I got about 4" over what I had before




Sorry for the fuzzy pic




I didn't take a picture of my boo-boo but I installed my rear hanger bolts in from the wrong direction and now the end of the bolt hits the frame so I am going to have to take apart and redo them. I don't care for the huge rake and hope it will look better with the small block removed.
 
Reply
Old Jul 6, 2014 | 10:56 AM
  #2  
brian1080's Avatar
brian1080
Fleet Mechanic
15 Year Member
Photogenic
Photoriffic
Liked
Joined: Feb 2010
Posts: 1,742
Likes: 5
From: Near St. Joseph,MO
You should not stack blocks. I don't recall any aluminum blocks being stock.. Just take the bottom one out and it will drop the rear where you want it and the bolts will fit.
 
Reply
Old Jul 6, 2014 | 12:53 PM
  #3  
Arbiter's Avatar
Arbiter
Mountain Pass
Joined: Dec 2013
Posts: 133
Likes: 1
The Ford items were cast iron most likely, that's what mine were that I took off the '78.

That top one is suppose to be near the axle tube instead of riding on top of the other like that.

Mine did have stacked blocks on it when I disassembled it, but I have no idea if they were from the dealership like that.

Nice looking truck btw!
 
Reply
Old Jul 6, 2014 | 01:32 PM
  #4  
fordbuddy79's Avatar
fordbuddy79
Mountain Pass
20 Year Member
Joined: May 2003
Posts: 211
Likes: 2
As others stated it's not a stock block.If you remove it or not you should fix the top spring plates,they are not on right.The lip should go on the spring,not next to it...Hope this helps...


BTW nice truck...
 
Reply
Old Jul 6, 2014 | 08:48 PM
  #5  
tbear853's Avatar
tbear853
Hotshot
20 Year Member
Shutterbug
Loved
Community Favorite
Joined: Feb 2004
Posts: 10,762
Likes: 2,590
From: The Shenandoah Valley
No way would I have lift blocks stacked like that.

Huge stresses on U-bolts keeping them tight and stacked under braking, acceleration, and on curves and sudden direction changes.

The top block is stock and the top plate above the springs should be turned 90 degrees so rolled lip edges cross the spring faces.
 
Reply
Old Jul 6, 2014 | 09:10 PM
  #6  
Jklnhyd's Avatar
Jklnhyd
Postmaster
Joined: Sep 2013
Posts: 2,595
Likes: 5
From: Pasadena, Ca
Mine has the stock block, then the 3" block on top of that on the rear. Im guessing that it was the "aftermarket" answer back in the day.
My block is actually twisted to the side a bit, and the bottom leaf also, so i doubt they were thinking ahead.

Now days, the lift kits are designed around the stock specifications.

Remove the block and make book ends.

 
Reply
Old Jul 6, 2014 | 10:45 PM
  #7  
Fordzilla80's Avatar
Fordzilla80
Logistics Pro
Joined: Jun 2008
Posts: 4,990
Likes: 6
From: Florida
Originally Posted by tbear853

The top block is stock and the top plate above the springs should be turned 90 degrees so rolled lip edges cross the spring faces.
I was wondering if I was the only one who noticed that. lol.
 
Reply
Old Jul 6, 2014 | 10:56 PM
  #8  
HIO Silver's Avatar
HIO Silver
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 82
From: NorCal
Originally Posted by Jklnhyd
Mine has the stock block, then the 3" block on top of that on the rear. Im guessing that it was the "aftermarket" answer back in the day.
My block is actually twisted to the side a bit, and the bottom leaf also, so i doubt they were thinking ahead.

Now days, the lift kits are designed around the stock specifications.

Remove the block and make book ends.

If using blocks, the factory block goes on top and the aftermarket underneath it.

In reference to the above, that setup is technically installed incorrectly. As shown, there is increased suspension travel until the "wing" makes contact with the bump stop... Lifts are generally for installing bigger tires so with everything else being equal, the bigger tire will contact the body before the suspension hits the bumpstop. Dig?

Blocks are usually okay for mild trail running and such unless the axle/tire gets bound up... really bound up. Then blocks have been known to be "spit out" due to the torque applied to the axle (and its axis of rotation) against the stuckness of the tire on the obstacle ... sort of like wheel hop but worse.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-2

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-3

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-6

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Old Jul 6, 2014 | 11:21 PM
  #9  
KIKKUP's Avatar
KIKKUP
Thread Starter
|
Elder User
Joined: Sep 2012
Posts: 654
Likes: 2
From: The Lone Star State



Fixed! I removed the lower aftermarket block, corrected the orientation of the top plate, used the shorter u-bolts from he Skyjacker kit and changed the orientation of the shackle bolt so it no longer hits the frame.





Sits way better now.
 
Reply
Old Jul 7, 2014 | 12:02 AM
  #10  
HIO Silver's Avatar
HIO Silver
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 82
From: NorCal
Whoa... didn't notice the u.bolt plate... the PO was a doofus. Good job.... nice rig. Subtle yet effective.
 
Reply
Old Jul 7, 2014 | 12:39 AM
  #11  
AK FORD GUY's Avatar
AK FORD GUY
Cargo Master
15 Year Member
Photogenic
Photoriffic
Joined: May 2009
Posts: 2,587
Likes: 47
From: Eagle River, AK
Originally Posted by KIKKUP





Sits way better now.

Looks awesome man. That's a real nice truck.
 
Reply
Old Jul 7, 2014 | 12:57 AM
  #12  
Jklnhyd's Avatar
Jklnhyd
Postmaster
Joined: Sep 2013
Posts: 2,595
Likes: 5
From: Pasadena, Ca
Originally Posted by HIO Silver
Whoa... didn't notice the u.bolt plate... the PO was a doofus. Good job.... nice rig. Subtle yet effective.
Lol, in this case, the OP is the "PO",

I in reference to the pic i posted. I wouldnt be surprised that it is wrong, lol. I swear, my PO did everything backwards or sideways
 
Reply
Old Jul 7, 2014 | 07:40 AM
  #13  
Arbiter's Avatar
Arbiter
Mountain Pass
Joined: Dec 2013
Posts: 133
Likes: 1
Originally Posted by KIKKUP



Sits way better now.
There ya go,.. sits way better,... all the girls from McDonalds will want to ride in your truck now.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
gohunt
1973 - 1979 F-100 & Larger F-Series Trucks
13
May 30, 2022 09:48 PM
c130herc
2017 - 2022 Super Duty
28
Jul 12, 2017 07:15 PM
billionj
Excursion - King of SUVs
7
Oct 25, 2016 06:10 AM
Tylus
1999 - 2016 Super Duty
6
Aug 28, 2011 01:19 PM
HKusp
1999 - 2003 7.3L Power Stroke Diesel
10
Jun 27, 2008 04:51 PM




All times are GMT -5. The time now is 04:05 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE