1976 GMC Sierra Classic – New 454, Fresh Paint, A/C, Truck This 1976 GMC Sierra Classic is a solid ranch truck with a freshly installed big-block drivetrain, updated A/C, and new paint. A great running classic that only needs interior finishing. Drivetrain New low-mileage 454 big block RV cam for strong torque Edelbrock intake Edelbrock 750 cfm carb New transmission installed with engine New speedometer installed at the same time (original broke at 69,999 miles) Features & Upgrades New A/C system Long bed, coated top and bottom New paint Dual gas tanks (40 gallons total) Condition Runs and drives strong Clean, dry, and solid Needs interior finished Overall A mechanically refreshed ’76 Sierra Classic with a brand-new 454, new paint, cold A/C, and the solid bones of an truck—perfect for finishing into a dependable classic driver or work cruiser.