What is the width of a 57 Chevy rear end?
Approximately 58 inches wide, measured from drum to drum across the rear axle (the wheel mounting surfaces) for most 1957 Chevrolet passenger cars.
The exact width can vary slightly by trim level (Bel Air, 210, or 150) and by production variance, so it’s wise to measure your specific car if accuracy is critical for wheels or a swap.
How width is defined in classic Chevys
Rear-end width can be described in several ways. The most common are the track width (center-to-center distance between the wheel mounting centers), the drum-to-drum width (overall width across the back for clearance checks), and the axle-housing width (outer faces of the axle tubes at the backing plates). Each definition serves a different purpose for restoration, wheel fitment, or swapping components.
Stock characteristics of 1957 Chevrolets
In stock form, most 1957 Chevrolet passenger cars share a rear track width close to 58 inches. Variations can occur due to model differences, drum offsets, or manufacturing tolerances, but the overall figure remains near that mark.
The following measurements are commonly cited when discussing the 1957 rear-end width. Use them as a baseline, and verify on your vehicle, especially for wheel clearance and fitment in swaps.
- Drum-to-drum width (overall rear end width): approximately 58 inches (about 1,470 millimeters).
- Center-to-center track width (wheel mounting centers): approximately 58 inches.
- Axle housing width (outer edge of the axle tubes at the backing plates): roughly 57.5–58.5 inches.
In practice, most 1957 Chevys cluster around the same width, with small tolerances due to production variance and drum offset. When planning wheel fits or axle swaps, measure your specific car to confirm exact width.
Practical implications for hobbyists
For restorers and hot-rodders, the rear-end width influences tire clearance, fender fitment, and the feasibility of swapping in a different axle. While the stock width is a useful baseline, any modification should be confirmed on the actual vehicle to avoid fit issues and alignment problems.
Summary
The standard rear-end width for most 1957 Chevrolets is around 58 inches, measured between the wheel mounting surfaces. Expect minor variations by model and production, and always measure your car when precise fitment is required for wheels, tires, or swaps.
