* Width: The 1994 Camaro's rear end is significantly narrower than the 1970 Chevelle's. This would require major modifications to the Chevelle's chassis and body to accommodate it. The wheels and tires would likely stick out far beyond the fenders.
* Suspension: The 1994 Camaro uses an independent rear suspension (IRS), while the 1970 Chevelle uses a solid rear axle (live axle). The entire suspension mounting points, frame structure, and control arms are completely different. Adapting an IRS to a Chevelle's frame would be a monumental task.
* Brakes: The brake systems are also entirely different, requiring a massive overhaul of the brake lines and potentially the master cylinder.
* Axle Housing: The axle housing itself is a different size and shape and won't easily bolt into the Chevelle's frame.
While some people undertake incredibly ambitious projects, adapting a 1994 Camaro rear end into a 1970 Chevelle would be considered a very extensive and impractical project, requiring significant fabrication, welding, and engineering expertise. It's far more reasonable to source a more suitable rear end from a similar-era vehicle or one designed for aftermarket modifications.
