gearbox with a shorter ratio

you want a rs5f32v gearbox from a vzr or autech (4.4) or an Mfactory 4.7 or 5.1 crown wheel and pinion to suit your gearbox

A shorter (numerically higher) final reduction multiplies torque and lowers the top speed in every gear that isn't an overdrive. It still multiplies torque in the overdrive but usually doesn't change top speed much. Overall reduction is final x transmission ratio.
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