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Old 05-06-2004, 09:21 PM   #1
1972ChevyGuy
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Rear Springs

OK.. I cant seem to search for older posts, and I dunno why... so here goes again.

I bought 4" rear drop coils for my 72 lwb. What all do I need to do to install them? Can they just be installed without changing anything? (mainly I remember someone having problems with thier rear end shifting over) Im pretty sure with only 4" I wont have any driveshaft problems?

Also... what is the best way to take the old springs out and get the new ones in?
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Old 05-07-2004, 08:04 AM   #2
Bowtie67
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It's not a driveshaft problem, when you drop the rear the rearend shifts because the trackarm bar forces the differential over, so you need an adjustable Trackarm Bar to realign the differential and shorter shocks otherwise the shocks will be bottoming out and breaking things.


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Old 05-07-2004, 04:26 PM   #3
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The shocks shouldn't be a problem unless the bump-stops have been modified.
Since they generally are, to help the ride characteristics after lowering, new shorter shocks may be needed.
The biggest concern, as noted, is the track bar. An adjustable bar or modification of the frame bracket can re-center the housing.
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Old 05-08-2004, 04:22 AM   #4
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I ran 4" drop springs and did have a problem with the truck "dog tracking". That's where you have to keep correcting for alignment issues with steering input. I would recommend an adjustable panhard and shock relocator brackets. The more a shock lays over, the less effective it is. With the new coils and shock brackets my truck rode better than a friends restored truck. Check those springs though. Make sure they are progressive rate, if not I'd return them for a set that are.
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Old 05-09-2004, 12:36 AM   #5
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I just installed my 4" drop springs in my truck. I didn't even think of checking to see if they were progressive rate or not ( how can you tell, are they tighter coil at one end then the other??). They were the only listing ( from belltech) that the store was able to get.

I have not checked to see if the rear is lined up yet as It will not be on the road anytime soon, but I did already get an adjustable panhard bar and plan to use it.
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Old 05-09-2004, 04:56 AM   #6
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Not necessarily. There website doesn't say (at least under the truck section) however they do list them for cars. I also saw 3 different part number 4" drop springs for '70-'72 trucks. Maybe they were kits, their website is not the greatest. Probably have to give them a call.
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