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Z28 came with the LG4 4bblbl V-8 as standard motor and LU5 twin TBI `Cross Fire Injection' 5.0 liter/305 motor was optional. All Z28's came with lightweight SMC (Sheet Molded Compound) hoods. The LU5 optioned Z28's also came with functional hood air induction flaps. The Z28 had a different nose that did not have the three horizontal slits above the grille as on the Sport Coupe and Berlinetta. Z28 came standard with a 3 piece rear spoiler and black horizontal bar in tail lights. The Z28 also came with front, side, and rear lower body valances in silver or gold. Just above the valance was a two-color lower body stripe that en- circled the car. Headlamp pockets on the Z28 were black. The Z28 came standard with a new 15x7 cast aluminum 5 spoke wheel accented with either silver or gold. Z28 badges appeared on the right rear bumper, and on the side valance just behind the front wheels.

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5.0 liter H.O. motor introduced mid-year (March 1, 1983). H.O. motor came with a higher lift and longer duration cam, dual snorkel intake system with `5.0 Liter H.O.' decal on air cleaner, specially calibrated Quadrajet carburetor, lightweight flywheel, electric cooling fan, bigger 2.75 inch exhaust and Corvette style wide mouth monolithic catalytic converter, `5.0 Liter H.O.' exterior badging, and came standard with 3.73 rear axle gear. In 1983, L69 was only available with 5 speed manual transmission.
All Z28 hoods were switched from SMC to steel except the LU5 air induction hood. Charcoal was added as a wheel accent/valance color.

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