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#1 |
Registered User
Join Date: Oct 2009
Location: Broken Arrow, OK
Posts: 1,226
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Drop coil interchangeability? What fits?
My 56 has been done for a year now and I'm bored so I am starting a 69 I got for free. My approach is somewhat strange on the front. I am using 73-87 control arms and drop spindles on the 69 k member, and I am adapting a dodge dakota rack and pinion to the frame for steering.
The question is this...why aren't the drop springs on 73-87 trucks the same part number as 69-72? The spring pockets all look the same and the K members are nearly identical. Not sure which ones to order?
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56 GMC BUILD THREAD: http://67-72chevytrucks.com/vboard/s...d.php?t=368649 69 long bed Chevy turned 67 gmc jimmy roadster: https://67-72chevytrucks.com/vboard/...d.php?t=851167 |
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#2 |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,698
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Re: Drop coil interchangeability? What fits?
67-72 and 73-87 front springs will interchange.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#3 |
Registered User
Join Date: Oct 2009
Location: Broken Arrow, OK
Posts: 1,226
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Re: Drop coil interchangeability? What fits?
Thanks. That's what I suspected. Just strange that all aftermarket springs say either 67-72 or 73-87 but not both.
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56 GMC BUILD THREAD: http://67-72chevytrucks.com/vboard/s...d.php?t=368649 69 long bed Chevy turned 67 gmc jimmy roadster: https://67-72chevytrucks.com/vboard/...d.php?t=851167 |
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#4 |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,698
|
Re: Drop coil interchangeability? What fits?
Where are you looking?
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#5 |
Registered User
Join Date: Oct 2009
Location: Broken Arrow, OK
Posts: 1,226
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Re: Drop coil interchangeability? What fits?
JEGS, Summit, ECE, LMC. The part numbers differ. I used the Federal Mogul website and they are different there too. I don't doubt they fit but a slight change in spring rate or free height makes it a different part number. A long time ago I put third gen firebird springs in a second gen TA to get a 1.5 drop in the front. A ton of GM stuff will change out if a person only knows where to look.
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56 GMC BUILD THREAD: http://67-72chevytrucks.com/vboard/s...d.php?t=368649 69 long bed Chevy turned 67 gmc jimmy roadster: https://67-72chevytrucks.com/vboard/...d.php?t=851167 |
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