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Old 08-31-2015, 12:02 AM   #1
Tonka Toy
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Join Date: Oct 2008
Member Number: 635
Location: Busily preparing my Idaho hidden bunker
Posts: 129
Default D series GM spring/axle swap questions

I've read a ton of stuff on the internet about how this is done. Well folks, I think that it's time we put the final touches to this for a how to guide. My 72 1110 is getting upgraded. New GM 14 bolt ff axle, with k20 springs. I want to start with the rear, since it's what I'm trying to do first. The plan for this truck is not to make a huge monster out of it. I want my short legged wife to not complain about how hard it is to get in, etc. I want to run a 33" tire. Can someone tell me how much spring rate and lift I would need? I also want to eliminate the lift blocks.

Thanks!

Jeff easterbrook
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72 1110 Travel-All "for the wife", family outing rig.
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