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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.

348 topics in this forum

  1. Hard staring 305 with Rochester carb.

    By Rocky Roads,
    • 1 reply
    • 261 views

  3. Old Blue for sale

    By Stanley Preskitt,
    • 0 replies
    • 508 views

  4. 75 C30 Rear Drum Brake Locked Up

    By David Nicholas,
    • 0 replies
    • 304 views

  5. 1976 GMC Eleganza Stalling Issue

    By Janet Rocco,
    • 0 replies
    • 306 views

  6. 83 1500 8ft bed cab and bed swap onto a 2013 1500 4wd 8foot bed chassis

    By Robnj51,
    • 0 replies
    • 313 views

  7. 1985 Short bed step side 4wd production numbers

    By Red 85 GMC stepside,
    • 0 replies
    • 302 views

  8. Loud Engine Knock While Accelerating

    By ArcticCatIV,   
    • 0 replies
    • 531 views

  9. 79 short box stepside project

    By ottoman,
    • 0 replies
    • 364 views

  10. 1973 power window switches

    By Dawson Garland,
    • 1 reply
    • 449 views

  11. 87 chevy tbi 350 no fuel

    By Markus Escamilla,
    • 0 replies
    • 641 views

  12. New here, but not a square body owner yet

    By blazblu82,
    • 0 replies
    • 377 views

  13. Help Identifying wheels.

    By ToddSw,
    • 7 replies
    • 764 views

  14. Troubleshooting

    By Cladiesel,
    • 0 replies
    • 684 views

  15. 1986 chevy c10

    By Seth Putnam,
    • 2 replies
    • 727 views

  16. 85 C10 throttle cable bracket

    By breadstick,
    • 0 replies
    • 997 views

  17. Bring My Old Drag Truck Back To Life 1 2 3

    By Pacfanweb,
    • 33 replies
    • 12.2k views

  18. Brass radiator tank replacement

    By d9gdon,
    • 0 replies
    • 1.3k views

  19. Wheel cylinders 77 C10

    By Benjamin Peter Trout,
    • 1 reply
    • 790 views

  20. 1987 R30 Engine and Induction Swap

    By wazzadakka94,
    • 0 replies
    • 1.2k views

  21. 1988 Chev G20 van problems

    By James O'Byrne,
    • 1 reply
    • 1.6k views

  22. 1986 emission removal

    By kentrx1,
    • 2 replies
    • 1k views

  23. LED front and rear light bulbs

    By Dan Brown,
    • 0 replies
    • 1.2k views

  24. 5 speed trans

    By apes,
    • 0 replies
    • 737 views

  25. 1987 Chevy R10 1/2 ton lower control arms

    By Plumbermik,   
    • 1 reply
    • 1.6k views

  26. 1990 Suburban 3rd row seating

    By 426ted,
    • 1 reply
    • 3.2k views


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