1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

'73 - '87 GM Truck Modifications

  1. The SquareBody Reference Library

    Part #s, RPO Codes, TSB's, Cast #'s, etc
    Sub-Forums: 1

    The SquareBody Reference Library

    Sub-Forums

    1. Owners Manuals

    149
    Threads
    4,227
    Posts
    Latest: Where to get build sheet and truck info 75 GMC Jimmy Gilderbeast, Oct 12, 2019

  2. Tech Discussion

    Discussion on anything technical or mechanical that doesn't fit in other tech categories.
    2,736
    Threads
    36,561
    Posts
    Latest: 86 GMC vent check valve in fuel vent line? Carl King, Oct 21, 2019 at 8:18 AM

  3. Suspension, Steering & Brakes

    Brake Repair, Disc Brake Conversions, Suspension Replacement, Steering & Alignment
    Sub-Forums: 3

    Suspension, Steering & Brakes

    Sub-Forums

    1. Lifted & Off-Road Systems

    2. Brakes

    3. Lowered & Street Systems

    2,114
    Threads
    25,178
    Posts
    Latest: Truck makes clicking noise while driving Preston, Oct 21, 2019 at 7:56 AM

  4. Electrical & Audio

    Electrical Accessories & Stereo Equipment.
    Sub-Forums: 3

    Electrical & Audio

    Sub-Forums

    1. Stereo & Entertainment Systems

    2. Gauge, Speedo & Instrumentation

    3. Retro-Fit & Aftermarket Accessories

    1,952
    Threads
    19,540
    Posts
    Latest: 90 Suburban ECM Fuse Popping Bright Idea, Oct 21, 2019 at 12:32 AM

  5. Interior

    Trim, Seats, Consoles, Door Panels, etc.
    Sub-Forums: 2

    Interior

    Sub-Forums

    1. Heat & AC

    2. Seats

    1,237
    Threads
    13,876
    Posts
    Latest: urethane dash pads anyone? Snoots, Oct 20, 2019 at 4:10 PM

  6. Exterior

    Tires, Wheels, Paint, Mirrors, Badges, etc.
    Sub-Forums: 4

    Exterior

    Sub-Forums

    1. Wheels and Tires

    2. Paint and Body

    3. Aftermarket Accessories

    4. Glass & Mirrors

    2,372
    Threads
    26,722
    Posts
    Latest: Grille ali_c20, Oct 21, 2019 at 8:45 AM

  7. Engine & Performance

    Engines, Engine mods, Chips, Filters, etc.
    Sub-Forums: 4

    Engine & Performance

    Sub-Forums

    1. Engine Swaps (Gas) LS, Vortec, LT1 , etc.

    2. TBI & EFI Conversions

    3. Diesel 6.2, Conversions Cummins, etc.

    4. Carb Fuel Systems

    3,856
    Threads
    59,825
    Posts
    Latest: Does my engine have a chance of living? Hatchet54, Oct 21, 2019 at 1:35 AM

  8. Transmission & Transfer Case

    Shift Kits, Conversions, Adapters, Twin Stick, etc
    Sub-Forums: 3

    Transmission & Transfer Case

    Sub-Forums

    1. Automatic Transmission

    2. Transfer Case

    3. Manual Transmission & Clutch

    1,630
    Threads
    19,719
    Posts
    Latest: Th400 Governor Weights HotRodPC, Oct 21, 2019 at 6:24 AM

  9. Differential & Driveline

    Front and Rear Axles, Lockers, Limited Slip, Yokes, etc
    Sub-Forums: 1

    Differential & Driveline

    Sub-Forums

    1. Front Diff & Hubs

    891
    Threads
    10,309
    Posts
    Latest: Squarebody Differentials. K201979, Oct 11, 2019