Shift Speeds
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Shift Speeds
Hey guys got a couple questions. 1984 F250 6.9 bored to 7.3 4x4 4spd reverse over and down. Don't have a tach in it.
First question . Yes I've drove a manual before. What speeds do I shift for best fuel economy?
Axle code is a ...P what gear ratio would be best for that. 3.73?
And how fast should i run in 4x4 high and lo.?
First question . Yes I've drove a manual before. What speeds do I shift for best fuel economy?
Axle code is a ...P what gear ratio would be best for that. 3.73?
And how fast should i run in 4x4 high and lo.?
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Joined: Jan 2001
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From: Virginia
What speeds do I shift for best fuel economy?
Axle code is a ...P what gear ratio would be best for that. 3.73?
And how fast should i run in 4x4 high and lo.?
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
You can decode your certification label here and figure out the axle ratio: Certification Label - Gary's Garagemahal
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