Front suspension extension
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Senior User
Joined: Jan 2004
Posts: 169
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From: Hesperia CA
Front suspension extension
I just noticed a difference between my stock 65 F250 beams and the late 70's disc brake beams I want to install. My stock 65 beams have a mount for a hook type thing that limits how far the suspension can extend. No such mount exists on the disc brake beams.
So what limits the suspension extension on the late 70's trucks? The shock absorber?
So what limits the suspension extension on the late 70's trucks? The shock absorber?
Hotshot
Joined: Feb 2004
Posts: 10,854
Likes: 2,621
From: The Shenandoah Valley
Coil spring retainers keep coil springs from falling out of place at full shock extension when the spring can become a loose fit in it's place, they don't define suspension travel or stop suspension drop. Just jack the truck by the frame until the wheels are off the ground. Now remove a shock bolt from each shock.
Lead Gopher
Joined: Aug 2012
Posts: 10,071
Likes: 1,626
From: Seattle
Never the shock absorbers.
1965 had the hooks on the I-beams to limit travel which kept the front springs from falling out of the tower. For 1966 through 1971 before serial number L80,001 they instead went to a bracket that holds the top coil of each of the front springs to the spring tower. These retainers are very rare.
C6TZ-5B300-F - RETAINER - FRONT SPRING MOUNTING - Upper
Then for 1971 after serial M00,001 through at least 1979 they used a few different retainers depending on a few factors like 2WD or 4x4, year, series, GVWR and other details.
Since you likely aren't changing your springs or towers that pictured retainer would be what I'd suspect would be functionally correct for your truck.
My 1966 I-beams are not even drilled for the bolts that hold on the limit hooks so they revised it to not include those.
Here's a picture of the lower retainers.
C6TZ-5B300-E - RETAINER - FRONT SPRING MOUNTING - Lower
1965 had the hooks on the I-beams to limit travel which kept the front springs from falling out of the tower. For 1966 through 1971 before serial number L80,001 they instead went to a bracket that holds the top coil of each of the front springs to the spring tower. These retainers are very rare.
C6TZ-5B300-F - RETAINER - FRONT SPRING MOUNTING - Upper
Then for 1971 after serial M00,001 through at least 1979 they used a few different retainers depending on a few factors like 2WD or 4x4, year, series, GVWR and other details.
Since you likely aren't changing your springs or towers that pictured retainer would be what I'd suspect would be functionally correct for your truck.
My 1966 I-beams are not even drilled for the bolts that hold on the limit hooks so they revised it to not include those.
Here's a picture of the lower retainers.
C6TZ-5B300-E - RETAINER - FRONT SPRING MOUNTING - Lower
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