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Old 10-06-2017, 08:16 AM   #11
N2TRUX
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Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,021
Re: 85 GMC Sierra "Scarlett"

Last night I focused on adjusting the coil preload. Initially we had dialed in an inch of preload to ensure clearence. We made changes at the show on the rear taking off 1/4" with no change to the front.

I adjusted both ends another 1/4" to see what happens. This lowered both ends a bit more, but keep in mind the change to preload is not a 1:1 ratio. Your changing spring rate not ride height specifically.

I also set the air pressure to 35 in fron and 30 rear cold. Fender height is 27 1/8th +/- a 1/16" all around.

After a few short runs I can feel the difference. She is firm but not harsh. I didn't press it much since the front alignment is still way out. I may play with that to improve feel till I get it professionally aligned.

Short term analysis is I really like it so far. I still have not change shock settings. Once I lock down preload I will focus and rebound damping.
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