Quote:
Originally posted by Bill Murray
I am not that deep into technical stuff but it is also quite possible the 60s had different gear ratios and the like.
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The diff ratios were different depending on tyre size so the road speeds were consistent between models, although today people often gear their CMPs up fitting 12.00 20 tyres to a 15 CWT which makes quite a difference to cruising speed, and also involves earlier shiftdowns on hills.