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| Rear Axle Ratio Codes https://www.slantsix.org/forum/viewtopic.php?t=43184 |
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| Author: | jkotis [ Sun Jan 09, 2011 4:17 pm ] |
| Post subject: | Rear Axle Ratio Codes |
I have a 1986 Dodge D150 pickup with the 225 cu in six cyl engine and automatic transmission. I have changed the tires to a larger size and need to know the rear end ratio so I can get the correct speedometer gear. I have the Service Maual and the Parts Catalog and can't find a listing for the rear axle code on the EIP. The rear axle code is 058. The Parts Catalog doesn't even list a D150 with the 3.7L engine. |
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| Author: | hantayo13 [ Sun Jan 09, 2011 7:17 pm ] |
| Post subject: | |
should be a tag on one of the rear cover bolts |
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| Author: | wjajr [ Mon Jan 10, 2011 5:47 am ] |
| Post subject: | |
Tags get removed. If rear is a peg-leg jack up one wheel, if Suregrip jack both off the ground. Mark inside of tire rotate tire exactly two complete turns while counting each ¼ turn of drive shaft’s rear “U†joint. (Hint; start with one of “U†joint’s caps pointing directly at ground before marking tire). Divide number of ¼ turns by 8. This will give you your axel ratio. Example: When conducting this procedure on my car I counted 28.5 1/4th turns of the “U†joint. 28 / 8 = 3.56… Or 3.55 Look at Year One’s speedo gear selection chart to find which gear you need, than go shopping. |
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