How to know if its a ford 144cid l6 or a 170cid l6 on a 1961 ford falcon?

How to know if its a ford 144cid l6 or a 170cid l6 on a 1961 ford falcon?

Read more: How to know if its a ford 144cid l6 or a 170cid l6 on a 1961 ford falcon?