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1973-1987 Chevrolet & GMC Square Body / Rounded Line Pickups

General and technical discussion for 1973 through 1987 Chevrolet and GMC pickup trucks. These years were otherwise known as "square body" pickups, although GM officially called them "rounded line" designs. Parts wanted and for sale encouraged.

362 topics in this forum

  1. 1987 Chevy R10 1/2 ton lower control arms

    By Plumbermik,   
    • 2 replies
    • 2.8k views

  3. Replacing stock steering wheel with....

    By 87ChevR10,
    • 0 replies
    • 204 views

  4. 1981 K5 Blazer - Oil Pressure switch wiring

    By mark97213,
    • 0 replies
    • 236 views

  5. Replacing a 1-ton rear end

    By Jhhl,
    • 0 replies
    • 275 views

  6. for sale Grill Chevy GMC Pickup Truck Jimmy 1977-1978-1979-1980

    By يحيى الشريف,
    • 3 replies
    • 570 views

  7. 1985 Short bed step side 4wd production numbers

    By Red 85 GMC stepside,
    • 1 reply
    • 1.3k views

  8. 1978 Silverado, K30 Dually, 4x4, Crew Cab (3+3), Long bed.

    By GHV,
    • 2 replies
    • 685 views

  9. Np205 stick in 2wd position But driving in low range

    By Andrew Kapel,
    • 1 reply
    • 470 views

  10. Rebuild 700r4, anyone done it?

    By W8MCC,   
    • 4 replies
    • 798 views

  11. 1987 R30

    By Jon12345,
    • 1 reply
    • 655 views

  12. 1984/85 k2500

    By mikewasilla,   
    • 1 reply
    • 758 views

  13. New Neighbor's Square Body

    By AlaskaErik,
    • 1 reply
    • 770 views

  14. C20 Driveline Carrier Bearing lubrication?

    By markdafedman,
    • 2 replies
    • 694 views

  15. Just purchased a 1975 C5 with a 366 - where to buy parts??

    By Todd Butler,
    • 1 reply
    • 773 views

  16. turbo400 trans

    By andrew futter,
    • 0 replies
    • 680 views

  17. Does Anybody Have A Royal Sierra? 1 2 3

    By royalsierraguy,
    • 33 replies
    • 24.8k views

  18. Np203 jerking question

    By Thomas Mann,
    • 0 replies
    • 688 views

  19. Hard staring 305 with Rochester carb.

    By Rocky Roads,
    • 1 reply
    • 993 views

  20. Old Blue for sale

    By Stanley Preskitt,
    • 0 replies
    • 1.3k views

  21. 75 C30 Rear Drum Brake Locked Up

    By David Nicholas,
    • 0 replies
    • 990 views

  22. 1976 GMC Eleganza Stalling Issue

    By Janet Rocco,
    • 0 replies
    • 985 views

  23. 83 1500 8ft bed cab and bed swap onto a 2013 1500 4wd 8foot bed chassis

    By Robnj51,
    • 0 replies
    • 958 views

  24. Loud Engine Knock While Accelerating

    By ArcticCatIV,   
    • 0 replies
    • 1.8k views

  25. 79 short box stepside project

    By ottoman,
    • 0 replies
    • 1.1k views

  26. 1973 power window switches

    By Dawson Garland,
    • 1 reply
    • 1.1k views


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