The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-08-2006, 09:13 PM   #1
EricS76
Registered User
 
EricS76's Avatar
 
Join Date: May 2004
Location: Llano,TX
Posts: 113
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)?
__________________
‘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…
EricS76 is offline   Reply With Quote
Old 02-09-2006, 09:53 AM   #2
EricS76
Registered User
 
EricS76's Avatar
 
Join Date: May 2004
Location: Llano,TX
Posts: 113
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?
__________________
‘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…
EricS76 is offline   Reply With Quote
Old 02-10-2006, 12:34 PM   #3
MylilBowTie
Right turn Clyde
 
MylilBowTie's Avatar
 
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
Re: C30 U-bolts vs. C20 U-bolts

My 86 C20 3/4 leafsprings are 2.5 inches wide.
__________________
1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73
1992 Camaro RS 305 TBI
MylilBowTie is offline   Reply With Quote
Old 02-10-2006, 01:28 PM   #4
EricS76
Registered User
 
EricS76's Avatar
 
Join Date: May 2004
Location: Llano,TX
Posts: 113
Re: C30 U-bolts vs. C20 U-bolts

Thanks for the info.
__________________
‘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…
EricS76 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:35 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com