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Old Oct 26, 2009 | 09:01 PM
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FORD4X476
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Gear question

Have 76 ford 4x4 w 4inch lift kit wanna put 35's have 3.50 gears should i change them out.. For highway use only what do u all recommend..
 
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Old Oct 26, 2009 | 09:14 PM
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shadowviper12345
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3.54 gears-1869 rpms at 55mph. my chart doesnt have 3.50.

according to the chart 3.90 gears have the minimum acceptable rpm for 35s(2059rpms). optimum gears would be 4.56 with 2408rpms

for highway use only id go with the 3.90. it depends on how you drive and if you want better gas mileage.
 
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