What grinds your gears? Is it prematurely worn or chipped teeth? Or an ominous clunking sound? These symptoms can be signs of a fairly serious problem with your ring and pinion gears, so it’s time to consult with the doctor—the gear doctor. In this case, the gear doctor is the Summit Racing technical department, which
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re answering some important questions about swapping gears. E.B . • Lake Ronkonkonia, NY Q: I have a 1987 Pontiac Trans Am with a 305 TPI engine, a TH-700R-4 transmission, and 2.73 rear axle gears. I want to upgrade to 3.42
Nothing says horsepower quite like rowing through the gears in a 1960s vintage, big block-powered muscle car. But like all good things, there is a price to be paid for mechanical nirvana. The acceleration-oriented rear axle gears in many muscle cars can put the hurt on top-end speed (not to mention fuel economy), and the
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