Here is a question that has me baffled. I'm rebuilding one of the first 3000
engines. HBN7L 605 chassis. The camshaft drive sprocket has 6 keyways in it.
Each keyway is numbered 1 thru 6. There are corresponding numbers on the
front of the sprocket near the teeth, w/ #1 at the big "dot" used for timing
the cam. Comparing this sprocket to a later one with only one keyway, the #1
is located the same as the single keyway and big dot.
This engine was built by Hollywood Sports Car in the early 1960s, and the guy
who raced it says it dyno'ed at 206 HP. I know that changing the cam timing
slightly can increase horsepower, but think that rotating the cam 60 degrees
(1/6 of the circumference) would not allow the engine to run. Why does this
sprocket/gear have 6 keyways?
John Snyder
1959 BN7
1960 BT7
1961 BN7 MK2
1962 BT7 MK2
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