No, you cannot. I have volumes from 3. x encrypted with Whirlpool by a simple password, and Veracrypt will not mount them no matter what, even in TC mode.
Can VeraCrypt read TrueCrypt?
TrueCrypt to VeraCrypt
If you have TrueCrypt containers, you can still use them in VeraCrypt. Even though the two programs do not share the same file format, VeraCrypt has a legacy mode - TrueCrypt mode, which allows you to mount and use your older volumes without any problems.
How do I mount a TrueCrypt volume in VeraCrypt?
Starting from version 1.0f, TrueCrypt volumes and non-system partitions can be converted to VeraCrypt format using any of the following actions:
- Change Volume Password.
- Set Header Key Derivation Algorithm.
- Add/Remove key files.
- Remove all key files.