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Old October 17th, 2014, 10:56 PM
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frost66gmc frost66gmc is offline
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Location: cullman, al
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Default 66 3 speed transmission with overdrive

Does anyone know which years a gm 3 speed transmission with overdrive will fit a 66 gmc pickup. I have a 305e v6 with a 3 speed transmission. The shifter is on the column. I want to put a 3 speed with overdrive and keep the column shifter. Hopefully this will increase gas mileage and speed.
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