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Not unless the ftoruh gear is overdrive, which most four speeds aren't. Most three and four speed transmissions are a 1:1 ratio in their final (high) gear so the engine is turning the same RPM's, for any given speed, in both. The only thing the 4 speed does is give you closer gear spacing so the engine doesn't have to rev quite as high between shifts. Gas savings would be minute if any at all.

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12y ago
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Q: 97 Chevy silverado 1500 4x4 w 4.3L While driving the steering will randomly give out on me Instead of having pressure fighting against you it randomly looses pressure and wants to jerk?
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