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**FirstOwner69** · 02-04-2012, 11:57 PM

I read someplace on this forum a couple days ago that the big block front springs are the same as the optional heavy duty front springs. If that's true, and if heavy duty front springs are listed on your SPID, you wouldn't be making a change. However, if HD front springs were also available as an option on a big block truck that could be another matter. My SPID lists option "F60 HD Front Spring" on a 350 equipped C20.

02-04-2012, 11:57 PM	#3
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,854	Re: C20 Front Spring Lift? I read someplace on this forum a couple days ago that the big block front springs are the same as the optional heavy duty front springs. If that's true, and if heavy duty front springs are listed on your SPID, you wouldn't be making a change. However, if HD front springs were also available as an option on a big block truck that could be another matter. My SPID lists option "F60 HD Front Spring" on a 350 equipped C20.