Tuff Country 14720 - GM 73-87 3/4 ton 4 box kit User Manual
Tuff Country For the car
 
PART NUMBER : 14720 
1973 — 1987 CHEVY PICK UP 3/4 TON 
4” SUSPENSION SYSTEM / WITH REAR BLOCKS 
 
PARTS LIST: 
 
Part # Description Qty. 
BL401 4” Rear Lifted Blocks 2 
5U-6109R 5/8” X 3 1/2” X 9 5/8” Round U-bolts 1 
5U-3507R 5/8” X 3” X 7 5/8” Round U-bolts 3 
5U-6112R 5/8” X 3 1/2” X 12 1/2” Round U-bolts 4 
58NW 5/8” High Nuts & Washers 2 
GMSBNB1 Front Spring Eye Bolts 1 
GMBLNB Front & Rear Brake Line 
 Extensions & Hardware 1 
LUBE Lube Pack 2 
14720INST Instruction Sheet 1 
INSTALLATION MANUAL
4” SUSPENSION SYSTEM
CHEVY PICKUP 3/4 TON
1973 —– 1987
PART # 14720
SJ051402
Special Note: This box kit includes the rear lifted 
blocks, front and rear U-bolts, front and rear brake 
line extensions and necessary hardware. Tuff 
Country EZ-Ride Suspension offers two styles of 
front springs, a Heavy Duty spring and a EZ-Ride 
spring. If you have not already ordered your front 
springs , please contact Tuff Country or your local 
Tuff Country dealer and order (2) 18470 (EZ-Ride 
Springs) or (2) 18471 (Heavy Duty Springs) 
 
Also, Tuff Country EZ-Ride Suspension highly 
recommends installing a raised steering arm once a 
4” suspension system has been installed. If you 
have not already ordered your raised steering arm, 
please contact Tuff Country or your local Tuff 
Country dealer and order part # 70100. 
 
Congratulations on your selection to purchase a Tuff 
Country EZ-Ride Suspension System. We at Tuff 
Country are proud to offer a high quality product at the 
industries most competitive pricing. Thank you for your 
confidence in us, and our product. 
 
Before installation begins, it is the customers/installers 
responsibility to make sure that all parts are on hand. If 
any parts are missing, please feel free to call one of our 
customer service representative @ (800) 288-2190. 
 
Make sure to use locktite on all new and stock hardware 
associated with this installation. 
 
It is the responsibility of the installers to make sure 
that the rear view mirror hanger is hung from the 
rear view mirror. The rear view mirror hanger has 
instructions on proper post installation procedures. 
 
Tuff Country EZ-Ride Suspension highly 
recommends that a qualified and or certified 
mechanic performs this installation. 
 
If you desire to return your vehicle to stock, it is the 
customers responsibility to save all stock hardware. 
 
IMPORTANT CUSTOMER INFORMATION
This vehicles reaction and handling characteristics 
may differ from standard cars and/or trucks. 
Modifications to improve and/or enhance off road 
performance may raise the intended center of 
gravity. Extreme caution must be utilized when 
encountering driving conditions which may cause 
vehicle imbalance or loss of control. DRIVE SAFELY! 
Avoid abrupt maneuvers, such as sudden sharp 
turns which could cause a roll over, resulting in 
serious injury or death. 
 
It is the customers responsibility to make sure that a 
re-torque is performed on all hardware associated 
with this suspension system after the first 500 miles 
of installation. It is also the customers responsibility 
to do a complete re-torque after every 3000 miles or 
after every off road use. 
 
After the original installation, Tuff Country EZ-Ride 
Suspension also recommends having the alignment 
check every 6 months to ensure proper tracking, 
proper wear on tires and front end components. Tuff 
Country EZ-Ride Suspension take no responsibility 
for abuse, improper installation or improper 
suspension maintenance. 
 
It is the responsibility of the customer or the 
mechanic to wear safety glasses at all times when 
performing this installation. 
 
It is the customers/installers responsibility to read 
and understand all steps before installation begins. 
OEM manual should be used as a reference guide. 
 
The Tuff Country EZ-Ride Suspension product safety 
label that is included in your kit box must be 
installed inside the cab in plain view of all 
occupants. 
 
If a body lift is used in conjunction with any Tuff 
Country EZ-Ride Suspension product, your Tuff 
Country EZ-Ride Suspension WARRANTY WILL BE 
VOID.