Will a trans out of 94 3.4 camaro bolt into 5.7?
No, a 1994 3.4L V6 Camaro transmission will not bolt directly to a 5.7L V8 Camaro engine. The bellhousings are completely different. They have different bolt patterns and different input shaft sizes. You'd need an adapter plate (which may or may not exist, and if it does, it would likely be a custom-fabricated piece) and potentially other modifications to make it work, and it's generally not a practical or recommended swap. It's far easier and more reliable to find a transmission designed for the 5.7L V8.