ignition timing

Mailbag: Carb Jetting for Atmospheric Conditions

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Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re making a few jetting changes to accommodate for high-humidity racing.                                 D.D. • Agana, Guam Q: I recently bought a 1970 Plymouth GTX. It came equipped with a Chrysler 440, a 750 cfm carb on an Edelbrock manifold, a stock Chrysler

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4 Ways to Optimize Your Nitrous System

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There’s really no secret to making horsepower with a nitrous system. Nitrous delivers instant power gains by cooling the intake charge, improving fuel atomization, and giving your engine the ability to burn more fuel. But there are four ways you can optimize your nitrous system to ensure you achieve maximum power with your new nitrous

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