What year is this head and is it F or K????

[cbcafejunkie]

What year is this head and is it F or K????it reads 3926

 

[Bert Jan]

No clue and i doubt anyone might know it from just the numbers. Some more pics might help though..

 

[cbcafejunkie]

90% sure they are f carbs 75-76 look at the valves....there huge lol
<img src="https://sphotos-a.xx.fbcdn.net/hphotos-prn1/1016680_10151688167076591_1813576645_n.jpg"/>

 

[cbcafejunkie]

Is it F or K????

anyone anyone?