Identification needed

[Mick78]

Hi folks, I've just bought a project with no id
Frame number is RC04-2208578
Engine number is RC04E-2208200
I can't find any information online with these numbers,
Thanks in advance for any help

 

[ricerocket71]

check this link out should have all the info you will ever need

http://www.sohc4.com/cb750/cb750k/

hope it helps

 

[BB74]

It's a DOHC CB750.

http://www.hondaboldor.nl/cb750f/

 

[Mick78]

I've found what I need now, it's a 1981 model