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#1
01-11-2002, 08:44 AM
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1985 300SE Transmission/drivetrain
I need to know the stock tire size, rear axle gear ratio, and the overdrive gear ratio on the 4 speed automatic trans.
I have a customer who has a broken speedo and is wondering what multiple to apply to his tachometer in 4th gear to get an approximate speed. thanks in advance Last edited by lordzx; 01-11-2002 at 09:15 AM. 
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#2
01-11-2002, 09:00 AM
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The transmissions have a 1:1 ratio in 4th gear.
__________________
I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k
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#3
01-11-2002, 09:44 AM
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thank you for the info.
i got 2 out of 3 so far 205-70-R14 stock tire size 1:1 ratio in the final drive of the 4 speed auto now i just need the rear differential gear ratio 
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