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Are 9 speeds making a comeback ?

Discussion in 'Ask An Owner Operator' started by 77fib77, Nov 24, 2016.

Page 3 of 3

Dec 2, 2016 #21

Lepton1 Road Train Member

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25,589

Nov 23, 2012

Yukon, OK

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Lepton1 said: ↑

The truck I used to drive had a 10 speed. The owner dropped a rebuilt 13 in it early September. Performance was greatly improved, with the ability to stay in the power band. Fuel mileage increased from 5.5 to 5.75.

I just bought a truck with a convertible 9 speed. It's in the shop right now, finishing out an overhead and replacing the cams. I'm having the mechanic install the converter to make it a 13 speed. The gaps between the gears puts you so far out of the power band it's difficult to maintain speed on hills, although it does have decent torque down to 1200 rpm
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I just got the truck back from the shop, with the 13 speed conversion done. MUCH easier to drive now. I no longer have to wind it up, only to lug it when pulling a hill and trying to accelerate. Time will tell regarding mpg. It set me back $500, but with even a slight improvement in mpg it will pay for itself within months.

Last edited: Dec 2, 2016

Lepton1, Dec 2, 2016

Lepton1, Dec 2, 2016

#21

77fib77 Thanks this.
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