[kevz68]

I would like to know if a "62" 390 out of a T-bird will fit in my "68" Torino GT Fastback?

[KULTULZ]

It will go in as the 68 had both the 390 and 428 OEM. The problem is with the engine block mounting pads. You would have to fabricate mounts (or plates) as pre-1964 blocks had two bolt mount as opposed to the later four bolt mount and of course will not directly bolt-in as per factory assembly.

You also have the cylinder head/exhaust manifold mounting pattern to contend with. The earlier heads only had a pattern to accept full size car manifolds while the later uni-body chassis used a modified mounting pattern to accept dedicated manifolds.

[kevz68]

Thanks. The motor mounts shouldn't be an issue. Do you think special fabricated headers would be the exhaust manifold answer?

[KULTULZ]

Most 66/ cylinder heads and most headers have the dual pattern. Check before buying.

There is also a cam retainer issue if you want a cam change and a need to change the water pump if you are running an ALT. Hopefully, you can draw this stuff off a later FE.