Does anybody know the ratio of the aw71 od and the 5th gear of a m47 tranny. I guess i m just looking for the final last gear (ie) just what the od is and just 5th on the m47
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85 740 b230f+t

Hi

The 5 gear ratio on the M47 series 2 is 0.82:1
the OD ratio on the AW71 is 0.69:1

I hope help you

I have all the Ratios for both the M47 and the AW71 boxes

George

Cars I own

Restoration project
Personal import 1974 144gl B20a M40

Cars I have owned
1982 244GL B23e/M45
1986 760GLE B28f/AW71

Everyday car
1989 740 turbo B230ft/M47 5 speed

Thank you, how is the m47 holding up in the turbo? What rpm are you running at 70mph or kph equlivent? and what rear end gears? Thanks in advance. Dave
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85 740 b230f+t

Hi Dave

I Did my M47 conversion over easter. I quickly found out that 2 gear synchro is worn and it jumps out of gear sometimes. But that doesn't over shadow the fact I now have a 5 speed box

70Mph = around 112kph The car does around 2500RPM at 100kph. I have a 3.54 rear end in my car

Cars I own

Restoration project
Personal import 1974 144gl B20a M40

Cars I have owned
1982 244GL B23e/M45
1986 760GLE B28f/AW71

Everyday car
1989 740 turbo B230ft/M47 5 speed