Will an Allison transmission bolt up to a 454?

Yes, an Allison transmission can be bolted up to a Chevrolet 454 engine, but it typically requires an appropriate adapter plate or specific transmission model designed for compatibility. The Allison transmission is often used in heavy-duty applications, so ensure that the specific model you choose matches the engine's output and intended use. Additionally, modifications to the driveshaft, crossmember, and wiring may be necessary for proper installation. Always consult with a professional or refer to specific manufacturer guidelines to ensure compatibility.