1639, RE: Is the 3.55 Tranny Better? Posted by DarkOne, Dec-31-69 06:00 PM
The 3.55 ring gear is geometrically stronger than the 3.94 ring gear. The swap is primarily for high-HP cars, as the taller gears actually help in loading up the motor (more boost sooner) and they also help get it to the ground (taller gears make the car less liable to rip tire all the time). On a bolted NA or low-boost car, i wouldn't do it.
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