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Steel 6 Degree Leaf Spring Shims, 66-77 Ford Bronco SKU: 1188

Black Friday Sale! Steel 6 Degree Leaf Spring Shims, 66-77 Ford Bronco

Steel 6 Degree Leaf Spring Shims, 66-77 Ford Bronco

Steel 6 Degree Leaf Spring Shims
Purchase Steel 6 Degree Leaf Spring Shims, 66-77 Ford Bronco
$42.74 Was: $44.99 SKU: 1188
Fits 66-77 Ford Bronco
29 Reviews

Product Overview:

These steel 6 degree tapered shims are 2 1/4" wide and machined specially for WILD HORSES to fit the unique Bronco size springs. These are not cast, and will hold up under extreme conditions. They include both 3/8" and 7/16" center bolts. WILD HORSES rear springs use the larger 7/16" bolts. Most stock and aftermarket rear springs will use 3/8" center bolts.

Tapered shims are used to help correct rear pinion angle, especially after changes are made to the rear springs or rear axle housings. Often when installing a rear suspension lift, the rear pinion angle will move downward. This may be just visible or you may feel a vibration in the driveshaft, especially under deceleration. We've found 6° to be the perfect correction for most modified Broncos. With the double-cardan style rear driveshaft found on all 66 to 77 Broncos, the proper angle is about 1 or 2 degrees below the driveshaft centerline. This angle can only be checked with the full working weight of the vehicle on the suspension. It can't be checked while still in the air, or with only partial weight of a vehicle still in the process of restoration. Bolt these shims on the spring pack above the perches of the rear housing with the thin edge pointing forward.

Note: don't use information for other vehicles that state a zero angle is required for double-cardan shafts. Broncos with leaf spring suspensions work best with this 1 to 2 degree minimal downward offset.

Full description

These steel 6 degree tapered shims are 2 1/4" wide and machined specially for WILD HORSES to fit the unique Bronco size springs. These are not cast, and will hold up under extreme conditions. They include both 3/8" and 7/16" center bolts. WILD HORSES rear springs use the larger 7/16" bolts. Most stock and aftermarket rear springs will use 3/8" center bolts.

Tapered shims are used to help correct rear pinion angle, especially after changes are made to the rear springs or rear axle housings. Often when installing a rear suspension lift, the rear pinion angle will move downward. This may be just visible or you may feel a vibration in the driveshaft, especially under deceleration. We've found 6° to be the perfect correction for most modified Broncos. With the double-cardan style rear driveshaft found on all 66 to 77 Broncos, the proper angle is about 1 or 2 degrees below the driveshaft centerline. This angle can only be checked with the full working weight of the vehicle on the suspension. It can't be checked while still in the air, or with only partial weight of a vehicle still in the process of restoration. Bolt these shims on the spring pack above the perches of the rear housing with the thin edge pointing forward.

Note: don't use information for other vehicles that state a zero angle is required for double-cardan shafts. Broncos with leaf spring suspensions work best with this 1 to 2 degree minimal downward offset.

These steel 6 degree tapered shims are 2 1/4" wide and machined specially for WILD HORSES to fit the unique Bronco size springs. These are not cast, and will hold up under extreme conditions. They include both 3/8" and 7/16" center bolts. WILD HORSES rear springs use the larger 7/16" bolts. Most stock and aftermarket rear springs will use 3/8" center bolts.

Tapered shims are used to help correct rear pinion angle, especially after changes are made to the rear springs or rear axle housings. Often when installing a rear suspension lift, the rear pinion angle will move downward. This may be just visible or you may feel a vibration in the driveshaft, especially under deceleration. We've found 6° to be the perfect correction for most modified Broncos. With the double-cardan style rear driveshaft found on all 66 to 77 Broncos, the proper angle is about 1 or 2 degrees below the driveshaft centerline. This angle can only be checked with the full working weight of the vehicle on the suspension. It can't be checked while still in the air, or with only partial weight of a vehicle still in the process of restoration. Bolt these shims on the spring pack above the perches of the rear housing with the thin edge pointing forward.

Note: don't use information for other vehicles that state a zero angle is required for double-cardan shafts. Broncos with leaf spring suspensions work best with this 1 to 2 degree minimal downward offset.
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Instruction 1

Review Steel 6 Degree Leaf Spring Shims, 66-77 Ford Bronco

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Q&A

Please Sign In if you have a question or want to post an answer.

Asked by jeff, December 14, 2022

Q: what lift will I have to use these shims

1 Answer

Answered by sales - December 15, 2022

A: Usually they will help with lifts of 3.5 and above. But, it is more of a case by case, Bronco by Bronco part. It all depends on your pinion angle, and or if you are getting vibration in the driveline.


PRODUCT REVIEWS
Randy Hendrix
Reviewed 06/23/2021
The product was flawless and appeared to be of good quality. The installation (in my driveway, by myself) was a bit of a workout. The "how to" video was helpful. Took about 3 1/2 hours, but I'm no speed monkey. Biggest challenge for me, (since I really didn't want to disconnect my frame to differential brake hose) was getting the third member low enough to slide the shim in without stretching the brake hose too far. Barely made it by loosening both sides, but only shimming one side at a time. I am pushing 60 years old, so when about the last step is to torque the U-bolts (8 nuts at 100+ foot-pounds), that's where you will feel it the next day. Hoping these shims will increase the life of rear driveline U-joints. Changed my rear U-joint angle from about 12 degrees to about 4.

John McClintock
Reviewed 05/03/2021
This was a great fix for the vibration coming from rear end. They were easy to install and now the vibration is gone

Greg Custred
Reviewed 03/17/2021
High quality material and precise machine work. Fit was great, worked as described. Shipped on time

Charles Meyer
Reviewed 07/30/2020
These were easy to install and significantly reduced vibration in my driveline.

Howard Frausto
Reviewed 05/25/2020
As always satisfied with the product from WH. Instructions are always very helpful and on point.

Timothy Strojny
Reviewed 07/05/2019
A must when using stock driveshaft.

Dave
Reviewed 03/28/2019
These are excellent steel shims that are well made. I was dreading the install but with the help of an energy drink, I had these installed in less than 2 hours.

Chuck Meyer
Reviewed 03/03/2019
Haven't been able to drive her at speed yet, but the directions were great and the install was quick and easy!

Roger Spade
Reviewed 12/07/2018
everything worked like it should. vibration gone

Ryan Randolph
Reviewed 03/21/2018
These shims are steel so they can be permanent. I used them on a 2.5 inch lift with a longer transmission, so they helped with by pinion angle.

Michelle Lomier
Reviewed 04/15/2018
Product seemed to be great but when I received them but I only received the 3/8" bolts and our leaf springs had a 1/4" hole so getting the holes to accept the 3/8" bolt without having the option for the 7'16" bolts was a nightmare...... I had to use about $50 in drill bits to accomplish the job.

Jon
Reviewed 04/16/2018
I installed a 2.5 lift on my 70 Bronco and wasn't comfortable with the increase in drive shaft angle. After some measurements I figured the 6 degree shims would work best. The Wild Horses kit was the most complete kit I could find and the most affordable. The install was smooth as could be expected and the instructions were clear as water. I couldn't be happier with the product.

Mike
Reviewed 11/08/2017
Even with a 2 1/2 in lift it helped with the rear end vibration.

Andy Mailman
Reviewed 09/25/2017
Excellent fit. Removed my driveline vibration after installing new springs.

Robert M Skidgell
Reviewed 09/03/2017
Install was easy, came with 2 different size threaded center pins for universal applications, best price from vendors.

Lance opperude
Reviewed 07/29/2016
Always great product, alway fast shipping...talk with them on the phone, very helpful and polite.

Matt D
Reviewed 05/22/2015
After installing a 2.5" suspension lift, I had a small vibration from the rear driveshaft. I measured the pinion angle and it was too steep so I ordered these. Installation was quick and easy and they got rid of the vibration.

Tim H.
Reviewed 08/21/2014
These shims virtually eliminated the rear driveline vibration in my bronco.

bud
Reviewed 08/03/2014
excellent product

Jim Mangiameli
Reviewed 07/17/2014
Just received rear 5.5in.leaf springs and 6degree shims and the extreme u-bolt kit,and I couldn't be happier,these parts rock,thanks WildHorses,Jim.

Paul
Reviewed 03/17/2014
With running a ZF and 3.5 SL, the pinion to driveshaft angle was severe, +9 deg. These 6 deg shims did the trick! Now its 3-4 deg.

PaveBronco
Reviewed 03/17/2014
Wont corrode and fall appart like those other Pot metal ones.

dunacn1
Reviewed 08/14/2013
Contacted Paul at WH with my symptom, he immediately knew I needed shims for my leaf springs. Where the customer service excelled was after the sale when I was provided detailed install instructions and a follow-up to see how it went!

Dmh
Reviewed 02/11/2013
Much better quality then I took off

MOSQUITO COUNTY STEVE
Reviewed 03/01/2012
COOLER THAN "DANG IT" I WISH I HAD DONE THESE 6 DEGREE SHIMS 20 YEARS AGO. NO MORE BRONCO CLUNK OR VIBRATION. IF YOU HAVE THE BRONCO DRIVESHAFT CLUNK/VIBRATION THEN DO THIS IMMEDIATLEY. YOU WILL NOT BE SORRY! '73 WAGON, BUITL WINDSOR, HEAVY BUMPERS & WINCH, WH 3.5" LIFT.


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