Re: C6FE-6090-B Heads... Info?
Those are indeed aluminum medium riser heads made for the GT40 MKII . It is the second version as the first had the C5AE designation. NEITHER were EVER over the counter OR dealer installed. They were a part of the "light weight" engine package created in '65 for the '66 LeMans race. ( not to be confused with a light weight Galaxie) The engine also used an aluminum center harmonic balancer , aluminum water pump , magnesium single four intake and a dry sump oiling system. My research leads me to believe that less than 100 heads were cast in '65 and they were never recast after that. When made , they used smaller "low riser" valve sizes because the steel seats limited the size of the valve. There should be hand stamped numbers on the end of the heads which could be of more help to me. Never used in Nascar as aluminum heads were not legal back then. Some did make it into drag racing after the LeMans race in '66 as the Tunnel Port 427 head was being developed for the '67 race . I owned an NOS pair back in 2000 and am very familiar with them. While rare , they are not as powerful as a modern , Edelbrock , Trick flow , etc aftermarket head. Price depends heavily on the amount of damage to the one head.
As my profile says I am a collector of this kind of stuff and have been for 50 years.
Experimental Ford parts collector.
Last edited by GT350HR; 07-15-2019 at 01:35 PM.
Reason: additional facts