Day: 24

Mailbag: Is Your Catalytic Converter Affecting Engine Vacuum?

Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re talking about catalytic converters killing engine vacuum.  L.R. Baltimore, MD Q: I have a 1979 Dodge Magnum with a 360 V8. It has a two-barrel carburetor and the Lean Burn ignition system. The only modifications I made to the engine were

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Larry Larson’s S10 Becomes First Street-Legal Vehicle in the Fives!

Larry Larson became the first person to make a five-second pass in a street-legal vehicle, making a 5.95-second pass in his 1998 Chevy S10 Pro Mod truck at the Street Car Super Nationals in Las Vegas, NV. Officially, the pass was clocked at 5.95 seconds at 244.43 miles-per-hour. As you probably remember, Larson’s S10 became the fastest street-legal car in

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