Straight Axle Pickup Chevy, GMC Block & U-Bolt Kits

The straight axle pickup with rear leaf springs will often need some rear spring lift after usage and time have taken their toll. We offer a wide array of rear block and u-bolt combinations for these Chevy and GMC models. Custom combinations of blocks and u-bolts are available separately if you don't find what you're looking for here.

    For high quality, made-in-America products, choose a Superlift rear block kit. These kits include a pair of cast iron blocks along with u-bolts, locking nuts and washers.
    Vehicle Year Lift Price Item #    
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    1973-87 1.5"
    $59.70
    3716 SL More Info
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    1973-87 2"
    $59.70
    3727 SL More Info
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    1973-87 2.5"
    $59.70
    3797 SL More Info
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    1973-87 3"
    $78.87
    3738 SL More Info
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    1973-87 4"
    $78.87
    3749 SL More Info
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    Pickup 4WD 1 Ton (except Crew Cab and Dually)
    1973-87 5"
    $84.51
    3759 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1969-72 1.5"
    $59.70
    3516 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1969-72 2"
    $59.70
    3527 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1969-72 2.5"
    $59.70
    3597 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1969-72 3"
    $78.87
    3538 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1969-72 4"
    $78.87
    3549 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1969-72 5"
    $84.51
    3559 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1973-87 1.5"
    $59.70
    3016 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1973-87 2"
    $59.70
    3027 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1973-87 2.5"
    $59.70
    3097 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1973-87 3"
    $78.87
    3038 SL More Info
    Pickup 4WD 1/2 Ton
    Pickup 4WD 1/2 Ton
    1973-87 5"
    $84.51
    3059 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1969-72 1.5"
    $59.70
    3516 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1969-72 2"
    $59.70
    3527 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1969-72 2.5"
    $59.70
    3597 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1969-72 3"
    $78.87
    3538 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1969-72 4"
    $78.87
    3549 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1969-72 5"
    $84.51
    3559 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1973-87 1.5"
    $59.70
    3316 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1973-87 2"
    $59.70
    3327 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1973-87 2.5"
    $59.70
    3397 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1973-87 3"
    $78.87
    3338 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1973-87 4"
    $78.87
    3349 SL More Info
    Pickup 4WD 3/4Ton
    Pickup 4WD 3/4Ton
    1973-87 5"
    $84.51
    3359 SL More Info

    Rough Country rear block kits contain a pair of lifted blocks and 4 u-bolts with nuts and washers. These are the same blocks used with Rough Country lift kits.
    Vehicle Year Lift Price Item #    
    1500 Pickup 2&4WD
    1500 Pickup 2&4WD
    1973-87 2"
    $59.95
    6510 HK More Info
    1500 Pickup 2&4WD
    1500 Pickup 2&4WD
    1973-87 3"
    $45.95
    6535 HK More Info
    1500 Pickup 2&4WD
    1500 Pickup 2&4WD
    1973-87 4.5"
    $72.63
    6511 HK More Info
    1500 Pickup 4WD
    1500 Pickup 4WD
    1969-72 1.5"
    $45.95
    6531 HK More Info
    1500 Pickup 4WD
    1500 Pickup 4WD
    1969-72 2"
    $59.95
    6532 HK More Info
    1500 Pickup 4WD
    1500 Pickup 4WD
    1969-72 3"
    $45.95
    6533 HK More Info
    1500 Pickup 4WD
    1500 Pickup 4WD
    1969-72 4.5"
    $75.26
    6515 HK More Info
    2500 Pickup 2&4WD
    2500 Pickup 2&4WD
    1973-87 1.5"
    $45.95
    6536 HK More Info
    2500 Pickup 2&4WD
    2500 Pickup 2&4WD
    1973-87 2"
    $53.18
    6512 HK More Info
    2500 Pickup 2&4WD
    2500 Pickup 2&4WD
    1973-87 3"
    $45.95
    6537 HK More Info
    2500 Pickup 2&4WD
    2500 Pickup 2&4WD
    1973-87 4.5"
    $63.16
    6513 HK More Info

    Skyjacker Rear Block Kits include a pair of cast iron blocks with 4 u-bolts, Nylon insert lock nuts and washers. Skyjacker blocks are high quality ductile iron (not gray iron) tapered and are 1-piece construction with axle pins built-in.
    Vehicle Year Lift Price Item #    
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    1973-87 2"
    $107.16
    BUK2082 SK More Info
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    1973-87 3.5"
    $117.68
    BUK3584 SK More Info
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    1973-87 4.5"
    $128.53
    BUK4584 SK More Info
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    1973-91 2"
    $107.16
    BUK2082 SK More Info
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    1973-91 3.5"
    $117.68
    BUK3584 SK More Info
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    1992-98 2"
    $107.16
    BUK2082 SK More Info
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    1992-98 3.5"
    $117.68
    BUK3584 SK More Info
    Pickup 1/2T 4WD
    Pickup 1/2T 4WD
    1973-87 2"
    $107.16
    BUK2087 SK More Info
    Pickup 1/2T, 3/4T 4WD
    Pickup 1/2T, 3/4T 4WD
    1967-72 2"
    $104.98
    BUK2080 SK More Info
    Pickup 1/2T, 3/4T 4WD
    Pickup 1/2T, 3/4T 4WD
    1973-87 3.5"
    $117.68
    BUK3588 SK More Info
    Pickup 1/2T, 3/4T 4WD
    Pickup 1/2T, 3/4T 4WD
    1973-87 4.5"
    $128.53
    BUK4589 SK More Info
    Pickup 1/2T, 3/4T 4WD
    Pickup 1/2T, 3/4T 4WD
    1973-87 5.5"
    $132.55
    BUK5589 SK More Info
    Pickup 3/4 Ton 8-Lug 4WD
    Pickup 3/4 Ton 8-Lug 4WD
    1973-87 5.5"
    $132.55
    BUK5592 SK More Info

    Tuff Country cast iron rear block kits are sold in pairs and include u-bolts with hardware. They are designed for vehicles with leaf springs above the rear axle.
    Vehicle Year Lift Price Item #    
    Pickup 1/2 or 3/4 ton 4WD
    Pickup 1/2 or 3/4 ton 4WD
    1969-72 3"
    $90.09
    97000 TC More Info
    Pickup 1/2 or 3/4 ton 4WD
    Pickup 1/2 or 3/4 ton 4WD
    1969-72 4"
    $121.71
    97001 TC More Info
    Pickup 1/2 or 3/4 ton 4WD
    Pickup 1/2 or 3/4 ton 4WD
    1969-72 5.5"
    $168.48
    97002 TC More Info
    Pickup 1/2 ton 4WD
    Pickup 1/2 ton 4WD
    1973-87 1.5" flat
    $74.16
    97003 TC More Info
    Pickup 1/2 ton 4WD
    Pickup 1/2 ton 4WD
    1973-87 2" flat
    $76.89
    97004 TC More Info
    Pickup 1/2 ton 4WD
    Pickup 1/2 ton 4WD
    1973-87 3"
    $91.45
    97005 TC More Info
    Pickup 1/2 ton 4WD
    Pickup 1/2 ton 4WD
    1973-87 4"
    $123.07
    97006 TC More Info
    Pickup 1/2 ton 4WD
    Pickup 1/2 ton 4WD
    1973-87 5.5"
    $170.21
    97007 TC More Info
    Pickup 3/4 ton 4WD
    Pickup 3/4 ton 4WD
    1973-87 2" flat
    $77.35
    97008 TC More Info
    Pickup 3/4 ton 4WD
    Pickup 3/4 ton 4WD
    1973-87 3"
    $91.91
    97009 TC More Info
    Pickup 3/4 ton 4WD
    Pickup 3/4 ton 4WD
    1973-87 4"
    $123.53
    97010 TC More Info
    Pickup 3/4 ton 4WD
    Pickup 3/4 ton 4WD
    1973-87 5.5"
    $173.94
    97011 TC More Info

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