HI
I thought I posted this yesterday but it did not show up so..

ON my 220D hot rod (617+five speed) I have two 220's one has a third member that has alu casing and cooling fins the other has a steel housing

How do I tell what the gear ratios are in them I am sure that the steel housing is stock for the year (1969) but the other is?

Thanks

Pic is of the one with cooling fins ( hey what do I know!)

Chuck

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The one sure way ( since internal gears can be changed ) is to jack up the rear of the car, place a mark on the driveshaft and turn it 10 times... count the exact number of rotations which the tire makes.. divide both by 10 and you have your ratio.

We randomly delete new guys posts just to see if they are paying attention... LOL

If you don't do 'gazintas', you can look on the left rear of the housing. The final drive ratio number is usually stamped into the differential housing.

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On a related subject, how is a Limited-Slip Diff identified?

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1991 M-B 560SEL Arctic White/Grey 99,000 Miles
1987 M-B 300SDL Ivory/Palomino 229,000 Miles (sold but never forgotten)
2006 Volvo XC70 Blue/Beige
1999 Porsche Boxster Arena Red/Savanna Beige
1986 Porsche 928S Goldweiss/Brown

they are stamped "Unobtainium"

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Proud owner of ....
1971 280SE W108
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