11-07-2007, 06:33 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,453
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Not Ranked
>> I've had my solid falt tappet in the motor for 10 years now. <<
Bill, why? Not trying to be a smart guy, just figure you know something I don't. As I see it, the reason for a solid lifter and it's associated issues is the ability to rev to 7,000 rpm's. If you never do that, why install one?
Popular Hot Rodding did an excellent article last year. They compared a roller to a flat. They picked cams of similar specs to make it as close as possible. As it turned out, the roller cam started to make more power once it got fairly "big". I can't remember the exact specs, but it seemed like anything over 270'ish or 280'ish in advertised duration the roller made more power. Below that, it was a wash. Wish I had saved that article, it was good.
Last month they did an article about hydraulic vs. solid. That was also very interesting. If I was at home I'd look it up.
Last edited by bobcowan; 11-07-2007 at 06:51 PM..
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