Also, not a problem with floor shift. However, the differential gear ratio will be too low. Roughly speaking, that means the the drive shaft turns 1 time to four times of axle turning. The automatic transmission equipped vehicles have a gear ratios of about 3 to 1 ratio. In other words, if your tachometer is 3,000 rpm at 65 mph now, it may be about 3500 rpm with the convertion.
All figures are approximate, but close to real.
Is there an automatic transmission that would bolt right up. Also, not a problem with floor shift. However, the differential gear ratio will be too low. Roughly speaking, that means the the drive shaft turns 1 time to four times of axle turning. The automatic transmission equipped vehicles have a gear ratios of about 3 to 1 ratio.