Chevrolet Laguna Colonnade
The 1973 Chevrolet Laguna represented Chevrolet's response to new federal safety regulations requiring stronger roof structures. The result was the distinctive Colonnade coupe with frameless door glass but B-pillars for structural support. The Laguna was the upscale Chevelle variant with unique front-end styling featuring a body-color urethane bumper. Despite emissions controls, the 454 LS4 V8 was still available, producing 245 SAE net horsepower and massive torque. The Laguna combined performance with luxury features in a stylish package.
454-equipped examples are most desirable. Check for rust in rear quarters and floor pans. Verify engine originality with casting numbers. The urethane bumper can crack with age.
The 1973 Laguna was the first year of Colonnade styling. The 454 engine would only be available through 1975 in this platform. Most Lagunas were ordered with smaller engines.