Mike34....a little background on "fuel injection" heads. In the beginning, there was the small block Chevy. The first two years offered what was called the "power pack" engine option. In 1957, Chevy introduced the fuel injected motor and the head castings were improved. Chevy put a cast identifier on the end of the heads...like a "double hump", a triangle, a saw tooth shape, etc. Since there were zero aftermarket heads available, the best Chevy head of the time was very desirable. Thus, "fuelie" heads were the hot ticket, especially for the non-ported guys. The "double hump" heads were of the 1965 Fuel Injection era. They used to sell for $100 a pair brand new including valves and springs...I bought a few sets myself.

The last "fuel injection" was 1965 for Chevy until the tuned port injection was introduced in the '80's. The older heads don't have the accessory bolt holes in the end of the heads since the accessory brackets mounted differently...until about '69 (as I remember) when the brackets mounted to the heads.

Now, you can buy aftermarket heads by the zillions and even the Chevy Vortec heads are superior to the old heads. But, if you have them, why not use them...or sell them to someone who is trying for historical accuracy...and take the $$ and buy a new set of Vortecs.

I had a set of '57 F.I. casting number heads and gave them away...before the restorer craze made them worth more than scrap value!!

mike in tucson