6066 (1960-1966) GMC Truck Club Bitcoin now accepted here! 
Pay Dues
Pay Dues or become a Site Supporter
 



Go Back   6066 (1960-1966) GMC Truck Club > 6066 GMC Truck Club Forum > Wheels, Tires, Suspension and Brakes


Wheels, Tires, Suspension and Brakes Keep them doggies rollin', rawhide

Reply
 
Thread Tools
  #1  
Old November 11th, 2015, 11:45 PM
surfamtn surfamtn is offline
Member
 
Join Date: Sep 2015
Location: Boulder, CO
Truck: 1966 1500
Age: 46
Posts: 56
Rep Power: 67
surfamtn is on a distinguished road
Default 1/2 ton and 3/4 leaf springs?

Hello gang, sorry if this has been covered in previous posts:\
I'm looking to lower my 1966 1500 (three-quarter ton) that has rear leaf springs. I would like to achieve total of about 4 inches drop in the back, I was planning on taking a couple of leafs (3 leafs to get 1.5inches) out of the springs and using the after market drop shackles to get another 2 1/2 inches. I don't need the 3/4 ton capacity so the decrease in spring strength is really no problem. The after market drop shackles are listed as being half ton, so...

The question I'm wondering is are the widths of the leafs the same?
Are the mounting points the same from 1/2 to 3/4 ton?
I'm planning on changing the shocks same time.
Is there anything else I'm failing to consider?
Reply With Quote
  #2  
Old November 12th, 2015, 02:11 AM
David R Leifheit's Avatar
David R Leifheit David R Leifheit is offline
Senior Member
 
Join Date: Jan 2013
Location: Dallas, Oregon
Truck: 1960-1966 1000-4000 series
Age: 62
Posts: 281
Rep Power: 166
David R Leifheit is a jewel in the roughDavid R Leifheit is a jewel in the roughDavid R Leifheit is a jewel in the rough
Default Re: 1/2 ton and 3/4 leaf springs?

Quote:
Originally Posted by surfamtn View Post
Hello gang, sorry if this has been covered in previous posts:\
I'm looking to lower my 1966 1500 (three-quarter ton) that has rear leaf springs. I would like to achieve total of about 4 inches drop in the back, I was planning on taking a couple of leafs (3 leafs to get 1.5inches) out of the springs and using the after market drop shackles to get another 2 1/2 inches. I don't need the 3/4 ton capacity so the decrease in spring strength is really no problem. The after market drop shackles are listed as being half ton, so...

The question I'm wondering is are the widths of the leafs the same?
Are the mounting points the same from 1/2 to 3/4 ton?
I'm planning on changing the shocks same time.
Is there anything else I'm failing to consider?
The springs are the same length, shackle to mount. Width they appear to be since we just removed a 1/2 ton rear on a '66 and bolted up the 3/4 ton rear, complete axle/spring removal, complete axle/spring install. Bolted right up, probably the easiest part of the whole thing.
As long as all you are doing is changing the shackle, shouldn't be a problem for you (clearance to frame means you aren't loading anything in the back). we ran into trouble with the driveline, the pumpkin on the 3/4 ton is deeper than the 1/2 ton so needed a longer driveline. But you aren't changing the axle itself, right, so that won't matter in your case.
__________________
--
- David R Leifheit
in Dallas, Oregon
mailto:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

(2) 1961 1500
1962 1000
1963 2500
1963 4000
1964 2500
Reply With Quote
Reply

Bookmarks

Thread Tools

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Anyone converted to 1 ton leaf springs? TJ's GMC Wheels, Tires, Suspension and Brakes 0 November 4th, 2015 06:30 PM
Re: leaf springs??? Archiver Previous Forum Posts 0 July 22nd, 2007 03:16 AM
leaf springs??? Archiver Previous Forum Posts 0 July 21st, 2007 01:55 AM
Leaf Springs Archiver Previous Forum Posts 0 May 11th, 2004 03:50 AM
leaf springs Archiver Previous Forum Posts 0 December 3rd, 2000 12:41 AM


All times are GMT +1. The time now is 06:24 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd 681711554703|1710437094|0