Which big 6 engine is this?

[jamesw]

I obtained an extra engine and transmission when I bought my coupe. Can anyone tell which type it is?

The serial number stamped at the rear is:

7395585 It looks like it also says 1-7075

Photos of the engine and ECU attached.

The PO says that it is a 3.3L from a 633 but who knows...

Thanks in advance for the help!

Cheers
James

 

[HB Chris]

1983 733i according to RealOEM