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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Leaf spring interchange

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Old Jul 19, 2020 | 07:18 PM
  #1  
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v84960
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Leaf spring interchange

Hi all,

Will leaf springs from a '73-'79 work on a '67? Someone inexpertly lowered the rear of my '67 f100 by removing all but a couple of leafs in the rear springs. It rides like a conestoga wagon and wheelhops terribly if the tires spin. I have access to springs from a '75 and a '75 1/2 ton.
 
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Old Jul 20, 2020 | 07:55 AM
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Originally Posted by v84960
Hi all,

Will leaf springs from a '73-'79 work on a '67? Someone inexpertly lowered the rear of my '67 f100 by removing all but a couple of leafs in the rear springs. It rides like a conestoga wagon and wheelhops terribly if the tires spin. I have access to springs from a '75 and a '75 1/2 ton.
1957/67 F100 rear springs interchange, as do 1968/72 F100 without Flex-O-Matic rear suspension. Springs are 2 1/4" wide, 24" > eyebolt < 28."

1973: Ford increased the width between the inner frame rails behind the cab from 33 1/2" used 1961/72 to 37 1/2." These rear springs are 2 1/2" wide, 26" > eyebolt < 26."
 
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Old Jul 20, 2020 | 09:56 AM
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v84960
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So if I understand you correctly, I cannot just swap springs from a mid 70's truck.
 
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Old Jul 20, 2020 | 10:38 AM
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What I do sometimes is check rock auto for the two different trucks and then compare part nuimbers. Did it on springs I had for a 95' and found they were same as the 88'; which they are now on !
 
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Old Jul 21, 2020 | 09:16 PM
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Originally Posted by v84960
So if I understand you correctly, I cannot just swap springs from a mid 70's truck.
Actually you can if you get the springs, perches and u-bults and plates.
 
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