They are an old head long obsolete, I got lucky and scored an NOS set in the boxes on ebay a while back. I've been told that they were developed for ARCA racers (short track NASCAR) back in the late 70's. They were over $1,200.00 bare each when new in 1979, that's allot of cake back then! Chuck said they are one of the highest quality castings he's seen.

These look allot like Indy 360-1's, so much so that it's easy to believe that these were the template for that head. Chuck said that these have a bit more porting meat than the 360's and should have more potential than the Indy's if taken all the way out.


Either way I'm happy with them, they look allot like iron heads (rough cast on the ends) so with paint they'll be pretty stealthy other than the lack of freeze plugs on the ends.