Can a 700r4 transmission bolt to 87 305?

Yes, a 700R4 transmission can bolt to a 1987 305 Chevy small-block engine. However, you'll need the correct flexplate (or flywheel if you're using a clutch setup, though that's less common with a 700R4) and possibly a torque converter specific to the 700R4. You may also need an adapter plate depending on the specific year of the 700R4 and the engine. It's not a direct bolt-on in all cases, but it's a common swap. Double-check the specific year and model of your 700R4 to ensure compatibility.