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If someone has some stock figures for mph at various RPM in top gear, like maybe from a Road & Track spec sheet, please forward them.
I have a '74 145 with (I assume) a stock rear end, but since I swapped in the Ford T5 5-speed transmission, and hooked up the Volvo speedo to the T5 output, it reads about 10 mph fast. (Good for the gas mileage and ego, but makes me go a lot further than I intended. Maybe it's a good safety and economy feature.)
The 4th gear of the T5 is 1.00, so I can calculate the 5th (.79) from there.
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