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What's a good rpm range for a 4bt at 65mph? Trying to decide on tranny, gear choices.

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Bill
 

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lower if definitely better. 1800 is ideal highway rpm for best mileage and power. Consdier top speed knowing that 2100-2200 at freeway is spinning it pretty good. I would shoot for maybe 1800 at 65 in 4th gear or something like that, assuming you have a 5th gear to use...
 
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