In addition, the article compares the '72-'77 generation to earlier cars, and makes no mention of the next generation. There's no reason to think the improvements incorporated in the Colonnade models would not carry forward.
Cool cars , there used to be a red and white one around here decades ago
The silhouette below of a 1973 Grand Am, I had one of these when I was younger and they handled very well from the factory and the rear wheel wells would swallow a 30" tall slick on a 10" rim without any mods. I would still like to find another one someday.
Also I believe this was the first year of the "Radial Tuned Suspension"
Mine had a 400, 4 barrel dual exhaust and a 355 posi.
Much of the "hoopla" back in the day, in the magazines (remember them - car craft, popular hot rodding, etc) centered around Herb Adams and his involvement in the colonnade cars. Never cared for them, too big, most too ugly etc. but certainly wouldn't have turned down a "stripper" at a good price. Problem was too many of them were loaded with too much stuff. Have only seen a handful of non AC examples in yards down here, and most were El Caminos. Believe the '77 to '90 B cars used a rear axle that is pretty much the same width, and possesses the same mounting points. Had a '83 Caprice fleet rear end that was 3.23 posi for years, couldn't sell it, but didn't know the full interchange back then either. It finally was offed in a trade to azchevs.
