Will a Chevy 350 transmission bolt up to 307 olds engine?

The short answer is yes, you can bolt a Chevy 350 transmission to an Olds 307. But it's not as straightforward as it sounds. To make it work, you'll need to have the right conversion parts. Here's what you'll need:

- An adapter plate to mate the Chevy transmission to the Olds engine. This is a machined part that will adapt the bolt patterns between the two components. You can find these online, at auto parts stores, or at machine shops.

- A flexplate that will match the Olds engine crankshaft and the Chevy transmission. The torque converter will mount to this part, so it needs to be the correct size and shape for both components. You can also purchase this part at most major suppliers.

- A starter that will fit both the Olds engine and the Chevy transmission. This is not as easily found as the other parts, so it's important to do your research and buy the correct one.

Once you have these parts, you can install them and mount the transmission to the engine. It's important to follow all the directions that come with your conversion parts, as they may have specific requirements for installation.