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There were Three different Differentials take your Vin number and ask your local dealer. Good Luck and Remember.

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Use the First In Synthetic Motor Oil's.

See My Bio For more information. Answer There should be a tag on one of the bolts on the rear cover. The gear ration is stamped on it.

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0There were three different differentials take your Vin number and ask your local dealer.

There should be a tag on one of the bolts on the rear cover. The gear ration is stamped on it.

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Limited Slip Differential 3.55 gear ratio

2.833 is the rear-end gear ratio

The gear ratio is 3.60:1, this is for the front limited slip differential.

4.63

A good majority of the 1984 Ford F150 gear ratio had 3.00 gears for the stock. In addition, the spline should be a 31.

80W90 gear oil.

I own a 1984 F150 XLT with a 351w (5.8 liter) and a 4V Holley carb. I 'just' had the differential rebuilt and the Ring & Pinion gear ratio that was in there was 3.0. It is a 9" Ford differential (stock). I had it replaced (it was worn anyway) with 2.75 ratio for better highway driving. I am not sure about the HP, though. My truck is wholly stock and I have been giving it a 'rolling restoration' since my late brother passed away in 2006 (I inherited it from him).

85W90 gear oil.

more than likely a 3.08 gear.

An axle ratio is a comparison of the number of ring gear teeth to the number of pinion gear teeth in a differential. For instance, a 3.55 gear ratio means that there are 3.55 ring gear teeth to every 1 pinion tooth.

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It would depend on the differential gear ratio and engine horse power/torque.

Yes. To do so, you will need your transmission gear ratios, your differential gear ratio and your tire circumference. You can derive the tire circumference by mutliplying its diameter by 3.1416 (pi).Example: At highway speed your RPM is 2000. Say your overdrive (5th gear) is 0.84:1, your differential gear ratio is 3.73:1 and your tire circumference for a P215/75R15 is 87". First divide the RPM by the first ratio (.84) which gives you 2380 RPMS. Then divide by the differential ratio of 3.73 gives you 638.3 RPM (Wheel speed). You speed is 87"x 638.3 = 55,532 inches per minute or 52.6 MPH.Hope that helps!

It's not. Call a GM dealership, tell them your VIN #, and they can tell you the gear ratio it came with from factory.

what size truck? 1500,2500,3500?

3.55 turns of the input shaft to one turn of the ring gear and axle shafts.

Change the differential gear ratio and/or increase the horse power of the engine.

Depends on the gear ratio of the final drive(differential gears). Typically about 2100 to 2400RPM

Yes, if you change the gears in the differential that drive the axles and wheels. The lower the gear ratio, the faster the car will go with the same engine RPM. Example: A car with a 3.55 to 1 ratio differential will go faster than one with a 4.1 to 1 ratio differential at the same engine RPM.

There are four ways to find a ratio. 1 A dealer can normally tell from the vin number. 2 There are normally tags or labels on the axle that have part number, gear ratio, and fluid requirement info. 3 You can count how many times you have to turn the driveshaft to get one complete turn of the tires. 4 You can divide the number of teeth on the ring gear and divide by number of teeth on the pinion.

There are four ways to find a ratio. 1 A dealer can normally tell from the vin number. 2 There are normally tags or labels on the axle that have part number, gear ratio, and fluid requirement info. 3 You can count how many times you have to turn the driveshaft to get one complete turn of the tires. 4 You can divide the number of teeth on the ring gear and divide by number of teeth on the pinion.

There are different options for gear ratios , check the tag at the differential . If the tag is missing you can determine the ratio by dividing the number of teeth on the crown gear by the number of teeth on the pinion gear. Some crown gears have the ratio stamped on them.

This page shall answer your question. Multiply the ratio of the gear (1st, 2nd, 3rd, etc) vs the differential and that will give you the total gear ratio. http://www.off-road.com/trucks4x4/article/articleDetail.jsp?id=277696

If there isn't a visible tag under one of the cover bolts, it may be stamped on the ring gear.

Look on the differential cover and there will be a tag with the ratio on it.