Topic: 1976 cb750f broken fins on head and jugs.

[DrunknTso]

Is the jug on 75 and 76 cb750f
interchangable? Also head?

[flyboy245]

Yep. I believe they changed in 77

[Jerry Rxman Griffin aka MuthaF'er]

Yep same engine as basically is the 77 and 78 K.

[DrunknTso]

Thanks guys. So I should look for 77-78 k jug/head as replacement? Or...? pardon my typing I have a gnarly TBI

[Don R]

No, 75 & 76 are the same. 77 & 78 are different.

[Stev-o]

Thanks guys. So I should look for 77-78 k jug/head as replacement?

Pretty sure I have them.  What is the number on your head?

[Retro Rocket]

No, 75 & 76 are the same. 77 & 78 are different.

Don, 75-76F have the 392 head , same as the 77-78K, you're mixing up the 77-78 F & K models , its the 77-78 F models that have the different head and jugs...

[Jerry Rxman Griffin aka MuthaF'er]

So yes, the 75F, 76F, 77K, 78K can all be used. The 78K head if complete will have different valve collars and the valves will differ only in the cut for the collars. The 78K head if complete will have the stronger springs found in the 77F and 78F. If the 78K head is bare you can use any of the valves and collars other than the 77F and 78F.

[Stev-o]

Jerry knows his head!

[HondaMan]

Jerry knows his head!

Yes, he does!