At one time it wasn't unusual for a hot rod's emphasis to be strictly based on performance; the goal may have been top speed on the dry lakes, or a low elapsed time at the dragstrip, but proper ...

What if-and believe me, this is a hypothetical-you were trying to put a wild, rare, 200-hp naturally aspirated Autech SR20DE from the hottest of the nonturbo S15 Silvias into a first-generation Miata, ...

A. If we assume the two cars have the same ratios in the automatic transmissions - and weigh the same amount - the Forester with its 4.444 final-drive ratio will accelerate faster or will move off the ...

Nelson Ireson October 18, 2011 Comment Now! The Shelby Supercars Tuatara is steadily progressing through its development process, with the latest work being done on selecting the final gear ratios for ...

Vehicle speed (mph), engine speed (rpm), tire diameter (inches), trans gear ratio, and rear axle gear ratio are all interrelated. If you know four out of five of these values, you can determine what ...

A car's gearing is all about compromise. Taller gears allow for a higher top speed and better fuel economy, while shorter gears give you rip snorting acceleration. The problem is that changing ...