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Old 02-08-2006, 09:13 PM   #1
EricS76
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Question C30 U-bolts vs. C20 U-bolts

I'm in the process of putting a 14 bolt axle under my C-10. The problem I have is that the C-10 ubolts won't work because the 14 bolt's tube diameter is larger, and the C-30(donor truck) ubolts won't work because they're for 3 inch wide springs, and they bolt on upside down (they are square ubolts, and the threads point down). There are ubolts and spring plates in LMC for C20's. My questions are, are C-20 springs 3in. wide or 2.5in. wide? And, do C-20's use ubolts with the threads up (like a C-10) or square ones, with the threads down (like a C-30)?
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Old 02-09-2006, 09:53 AM   #2
EricS76
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Re: C30 U-bolts vs. C20 U-bolts

How about just what is the width of a C-20 spring? 2.5 or 3 inches?
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‘66 Chevy C-10, long bed fleetside, 350, 3 on the tree, 4-7 drop.
'77 chevy C-10 Custom Deluxe, 350, SM465 4 speed, flatbed.
'80 jeep CJ-5.
‘14 Chevy 1500 Z71…
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Old 02-10-2006, 12:34 PM   #3
MylilBowTie
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Re: C30 U-bolts vs. C20 U-bolts

My 86 C20 3/4 leafsprings are 2.5 inches wide.
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Old 02-10-2006, 01:28 PM   #4
EricS76
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Re: C30 U-bolts vs. C20 U-bolts

Thanks for the info.
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‘66 Chevy C-10, long bed fleetside, 350, 3 on the tree, 4-7 drop.
'77 chevy C-10 Custom Deluxe, 350, SM465 4 speed, flatbed.
'80 jeep CJ-5.
‘14 Chevy 1500 Z71…
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