camshaft duration

Mailbag: Cam Duration and Piston-to-Valve Clearance–and How they Relate

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You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re examining camshaft duration and piston-to-valve clearance. D.W. Nova Scotia, Canada Q: I have a 454 in a 1983 Trans Am. I would like to install a bigger camshaft with an operating range to 5,500 rpm, yet have safe piston-to-valve

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How to Choose the Right Street Cam (Part 1)

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Not so long ago, the bigger is better philosophy reigned supreme regarding camshafts. The result was overcammed engines that sounded great and could crank serious top-end power, but were not very streetable and couldn’t idle to save their lives. But thanks to modern cam technology, you can come pretty darn close to the Holy Grail

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