07-03-2004, 11:17 AM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,448
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Not Ranked
From what I understand, it's not just the hp gain.
Less chance (zero) of flattening the cam over time, ability to maintain high revs (maybe higher revs to begin with), more precise tuning/valve action with bigger cams, etc.
Then again, steel distributor gear vs. bronze, less catastrophic cam damage if a pushrod bends, primary use on the street/long drives and no desire to be screwing with the motor more than I have to.
I'm going to assume 30 hp loss and still see if it makes sense after considering everything. Will I miss 30 hp? He!!, I didn't miss not using the secondaries for the past year (another story).
I keep thinking about Smith's motor being a flat tappet. Joe's in the midst of building a Shelby block based monster for a Mark IIB GT40 for the European historic series (they get serious over there...first race is a 6 hour enduro  ), and he's going to use a flat tappet setup for durability's sake per the customer's request.
Sounds like a new topic. 
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Jamo
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