You got the engine code which is 355909 and was wondering if they made a performance motor with a four barrel manifold The castings on the front of the heads are 2 elevated humps What is it?

Answer 1

You need more information. What kind of car,engine,year. All we can tell is that could be driving a elephant. The two "humps" you metion are older modeal heads from the 60's. They are indeed called camel humps. They can be found in 1.94 or 2.02 intake valve. If you have true camel hump heads, keep them! They are fctory performance heads and are worth a mint. There should be no accessory mounting holes in the heads, ie. holes for brackets such as alternator, etc....