Big plug gaps mean big power?
“The best way to ground for the benefit of the ignition,” explains Brock, “is to run an 18g or 14g wire from one cylinder head to the other and from there to a good chassis ground.
Flatness: How gas ports and flat ring grooves succeed with lightweight racing rings
By Sam Logan: A great many modern drag racing engines are equipped with lightweight piston rings. These rings require combustion pressures delivered through gas ports to achieve complete ring seal. Horizontal gas ports are used in oval track racing pistons to avoid...
Camshaft lobe separation angle: what does it mean?
By Freddie Heaney: The lobe separation angle of a camshaft is typically determined by the engine’s purpose, its displacement, and its compression ratio. A 350cu in oval track racing engine, for example, often runs on a narrow lobe separation angle of 106 degrees. In...
Wild Wilfred: Racing rocker arm virtuoso goes home
By Sam Logan Photography by Moore Good Ink, April 15, 2014 Dawsonville, Georgia: How is it that the man who makes the finest racing rocker arms—five to six hundred sets per year—is virtually unknown? His valve train parts, which are shipped in unmarked boxes, flow...
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