differential carriers

Mailbag: Close Ratio vs. Wide Ratio Transmissions & More

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Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we cover the difference between close ratio and wide ratio transmissions and provide casting numbers for GM differential carriers. R.C. Elmore, AL Q: I have a couple questions regarding driveline performance: First, I have seen the terms “close ratio”

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How to Choose a Ring and Pinion in 4 Steps

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Horsepower is the holy grail of high performance. We love it. We want more of it. We can never seem to get enough of it. So why do many people waste horsepower once they find it? In the seemingly endless search for more horses, muscle car and race enthusiasts often squander existing horsepower by using

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