SS/CS question.

[Ralph A Powell]

If you have the N-351 with all the material in the intake port you can make a really great intake port if you raise the intake port by filling the floor about 3/8 and raising the roof the same amount with the 10 degree valve angle you end up with lot of both air speed and air flow. I know for a fact there a run of heads with the intake valve move towards the center of the bore and exhaust moved toward the bore wall. Add some .060 offset cylinder head dowels to move the head and you have a great combination! The reason I know is when I was working at World Products we were the developers and manufacturer of the head for Ford Performance. I still have a file on that product.