1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
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Vacuum Hose Size?

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Old 09-18-2015, 12:06 PM
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Vacuum Hose Size?

Is there a standard size-diameter for vacuum hoses on a 78' F250 w/ 400ci engine?
 
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Old 09-18-2015, 02:29 PM
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There are multiple sizes 1/4 3/8 1/2 I believe
 
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Old 09-18-2015, 07:34 PM
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Most will be either 3/16" or 1/4" but some of the larger lines (e.g. PCV) are 3/8"
 
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Old 09-18-2015, 09:42 PM
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Power brake booster is half as I recall
 
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Old 09-18-2015, 09:46 PM
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Cut off short samples like a 1/4-inch lengths, tally and write down the total linear footage by approximate size, and bring them to the parts store with you to compare to the sizes offered off the bulk rolls.
 
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