Anyone with Gear Ratio Calc?
03-05-2006, 02:12 AM
#2
Burning Brakes
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formula is:
RPM = (MPH x 336 x axle ratio) / Tire diameter
Your 2400 at 60 for a 3.08 would work if you have a have a tire which is 25.9 inches tall which is shorter than stock tire, but could be correct if you have a shorter tire.
Tire diameter can be computed by taking the width number (such as 225) divided by 25.4 x tire profile number expressed in percent (such as 60% for 60.70% for 70 ,etc.) x 2 then add diameter of rim
225/70/15 tire is 225/25.4 = 8.858 inches wide x 70% x 2 = 12.4 inches plus 15 inches for the rim = 27.4 inches
RPM = (MPH x 336 x axle ratio) / Tire diameter
Your 2400 at 60 for a 3.08 would work if you have a have a tire which is 25.9 inches tall which is shorter than stock tire, but could be correct if you have a shorter tire.
Tire diameter can be computed by taking the width number (such as 225) divided by 25.4 x tire profile number expressed in percent (such as 60% for 60.70% for 70 ,etc.) x 2 then add diameter of rim
225/70/15 tire is 225/25.4 = 8.858 inches wide x 70% x 2 = 12.4 inches plus 15 inches for the rim = 27.4 inches
03-05-2006, 07:37 AM
#3
03-05-2006, 02:27 PM
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Originally Posted by Brad Maynard
formula is:
RPM = (MPH x 336 x axle ratio) / Tire diameter
Your 2400 at 60 for a 3.08 would work if you have a have a tire which is 25.9 inches tall which is shorter than stock tire, but could be correct if you have a shorter tire.
Tire diameter can be computed by taking the width number (such as 225) divided by 25.4 x tire profile number expressed in percent (such as 60% for 60.70% for 70 ,etc.) x 2 then add diameter of rim
225/70/15 tire is 225/25.4 = 8.858 inches wide x 70% x 2 = 12.4 inches plus 15 inches for the rim = 27.4 inches
RPM = (MPH x 336 x axle ratio) / Tire diameter
Your 2400 at 60 for a 3.08 would work if you have a have a tire which is 25.9 inches tall which is shorter than stock tire, but could be correct if you have a shorter tire.
Tire diameter can be computed by taking the width number (such as 225) divided by 25.4 x tire profile number expressed in percent (such as 60% for 60.70% for 70 ,etc.) x 2 then add diameter of rim
225/70/15 tire is 225/25.4 = 8.858 inches wide x 70% x 2 = 12.4 inches plus 15 inches for the rim = 27.4 inches
03-05-2006, 03:27 PM
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Burning Brakes
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the differentials do have a set of characters stamped at bottom.
My 71 has AAW137E2 and the AA means 3.55 for 1971. The codes very by year, but if you find the code on yours, someone can tell you which it is. (I only have book that covers 70-72)
My 71 has AAW137E2 and the AA means 3.55 for 1971. The codes very by year, but if you find the code on yours, someone can tell you which it is. (I only have book that covers 70-72)
03-05-2006, 03:47 PM
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Originally Posted by Brad Maynard
the differentials do have a set of characters stamped at bottom.
My 71 has AAW137E2 and the AA means 3.55 for 1971. The codes very by year, but if you find the code on yours, someone can tell you which it is. (I only have book that covers 70-72)
My 71 has AAW137E2 and the AA means 3.55 for 1971. The codes very by year, but if you find the code on yours, someone can tell you which it is. (I only have book that covers 70-72)