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Run to Rund · 10-05-2014, 10:40 AM

64-7 springs have both ends "tangential" meaning the end coil is round and wound tighter to the previous coil. 68-72 springs have the bottom tangential and the top "square" meaning the end coil is flat, not round in cross section. The frame pockets are different to mate to the correct spring.

10-05-2014, 10:40 AM	#4
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 584 Likes: 9 Liked 54 Times in 27 Posts	Re: GM A Body front springs 64-7 springs have both ends "tangential" meaning the end coil is round and wound tighter to the previous coil. 68-72 springs have the bottom tangential and the top "square" meaning the end coil is flat, not round in cross section. The frame pockets are different to mate to the correct spring.