Quote:
Originally Posted by tubman
Ron, Do you know of any other heads besides Edmunds that have moved the plug away from the exhaust valve?
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Well, I know it isn't really an answer to the question, but the Harley KR racing flatheads had the plug centered over the intake valve.
When I designed the heads for our Cadillac flathead for Bonneville, I put the plug in the same place. The idea was with the KR chamber and transfer area that I wanted the flame front to start above the intake and swirl into the chamber. I figure that since Harley did it this way (and they made 1.5 HP per cubic inch on gas), was a good thing to try.
On our blown FlatCad, we've made 650 HP on alky (no nitro). Of course we also had 20 lbs of boost.