4. Chevrolet Chevelle “Heavy Chevy”
In 1971, dark clouds were on the horizon for muscle car enthusiasts. Tightening government regulations, high insurance rates, and environmental standards attacked the segment. Manufacturers understood they had to act fast to save the market. So the first thing they did was introduce economy versions of their popular muscle cars. They gave their cars smaller engines but interesting designs to maintain appearance and popularity. One of those models is the 1971 Chevelle “Heavy Chevy.”
It was an interesting one-year-only muscle car positioned below the Chevelle SS lineup. The Heavy Chevy came with a 200 HP 307 CID V8 engine, and you could also opt for a 245 HP 350 CID V8 engine. The most powerful version was the 300 HP 402 CID V8. If you wanted a top-of-the-line 454 big-block V8, you had to go the SS route. Although the Heavy Chevy was a popular model and they built over 6,500 of them in one year, it’s quite rare today.