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Old 04-09-2016, 09:15 AM   #12 (permalink)
Ecky
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ND Miata - '15 Mazda MX-5 Special Package
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It was common to put the LS 5th gear into the transmissions that came with the B16's (y21), so as to have a reasonable highway gear (though still rather short) while gears 1-4 would still keep the engine above VTEC engagement (5600RPM) when upshifting at redline. The Y21 transmission has a slightly shorter final drive than the LS transmission, but not enough shorter as to make a large difference.
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