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140/164 Series General Forum for the Volvo 140 and 164 cars |
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M47 onto B20Views : 1267 Replies : 11Users Viewing This Thread : |
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Jan 18th, 2021, 17:21 | #11 |
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On the 140, in North America a non overdrive equipped car would typically come with a 4.1 rear drive ratio. Cars that were originally equipped with OD would typically come with a 4.27 rear drive ratio.
The other consideration in the rear drive ratio is tire size. The original tire size would likely have been 165/78 profile which is not so common these days. If you have fitted more readily available tire sizes such as a 185/65 the effective rear ratio may be closer to the original 4.27. If you retain the original 165/78 profile tires and have a 4.1 rear drive an OD with a 0.76 ratio might be unrealistic for towing in OD. If you have 185/65 tires with a 4.27 rear drive you might be able to tow in OD (no hills allowed!). When comparing to your 145, keep in mind that a 4.56 rear drive was an option on these cars. I don't know whether it was a dealer installed option or something that was specific to a particular market or particular product (ambulance or delivery vehicle). |
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Jan 21st, 2021, 15:08 | #12 |
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Location: Chatham
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4.56 was standard with the M41 the same as Amazons so equipped. Autos may have got the 3.90. I believe the auto 1800ES did but not sure about the 140/164. B20 cars got J type where fitted to the various models. No OD fitted to standard B20 Amazons. B20 123GT I don't include as it wasn't a standard model for the world market.
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