3946047 BBC aluminum HEADS "winters"
 

A nice set of 3946074 BBC Aluminum WINTERS casting no welding or port work.
Look to be virgin heads with no valves or studs. 1970 date code.
Any offers?

Re: 3946074 BBC aluminum HEADS "winters"
 

Sorry inverted numbers!!!
3946074!!!

Re: 3946047 BBC aluminum HEADS "winters"
 

ANY OFFRES??
Are these good for anything?
What do they fit??
They have a D shaped exhaust port.

Re: 3946047 BBC aluminum HEADS "winters"
 

074 were round exhaust. maybe welded? :) ron

Re: 3946047 BBC aluminum HEADS "winters"
 

No, not touched at all I don't think they ever had valves in them.

Re: 3946047 BBC aluminum HEADS "winters"
 

The later 074 heads were casted by the factory with D ports.

Ron

Re: 3946047 BBC aluminum HEADS "winters"
 

I have a set of NOS 074 heads with 73 dates and they have round exhaust ports. 077 had D ports

Re: 3946047 BBC aluminum HEADS "winters"
 

I wonder how much you want for them ?

Re: 3946047 BBC aluminum HEADS "winters"
 

haven't thought about selling. but maybe? don't really know value? ron

Re: 3946047 BBC aluminum HEADS "winters"
 

The very first sets of D-port BBC heads such as these were built with the old casting #. You had to call Vince Piggins at Chevy Product Promotion and he'd get you the heads (by way of Ernie Callard). I received four heads from Vince for my program way back when. They were still prone to rocker stud boss cracking and "loose" guides :(. The same back door program applied to the first BBC Marine (Bow Tie) blocks too, although the blocks did have dedicated casting numbers if I recall correctly.

Wayne