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Jul 21st, 2025 | | | | Joined: Jul 2005 Posts: 52 'Bolter | | 'Bolter Joined: Jul 2005 Posts: 52 | Hi
I'm looking to change my rear springs...
The 1/2 ton springs seem to be much cheaper $169 vs $259. Will the 1/2 ton fit my 3/4 ton?
Don't usually load much in her...just want her to sit level.
Thanks
Carl | | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | In 1950, the 1/2 ton and 1 ton rear springs are different widths. | | | | | Joined: Oct 2006 Posts: 4,983 Master Gabster | | Master Gabster Joined: Oct 2006 Posts: 4,983 | What's wrong with the old springs?
~Jim
| | | | | Joined: Jul 2005 Posts: 52 'Bolter | | 'Bolter Joined: Jul 2005 Posts: 52 | My bed isn't level from side to side.
I measured the frame to ground distance...not the same...apparently one of the springs is tired. I looked everything over & couldn't spot anything out of kilter.
My local spring shop told me that they were too old to rearch...they said they could add a leaf but that wasn't the way to fix it & it would be trial & error.
Sounded to me that new springs would be the easiest fix...
My pickup is a 1951. | | | | | Joined: Mar 2004 Posts: 873 Shop Shark | | Shop Shark Joined: Mar 2004 Posts: 873 | The 1/2 ton springs are also longer than the 3/4 ton. | | | | | Joined: Feb 2007 Posts: 513 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 513 | i'd look for another spring shop to rearch, but look at kc spring in kansas city the may sell them, i don't recall
1949 Chevy 3600 Flatbed all orginal 1964 gmc 4000 1973 gmc 6000 2005 chevy duramax 4x4 1994 chevy 1500 Trucks are GM and Tractors are Orange "I don't measure a man's success by how high he climbs but how high he bounces when he hits bottom." - General George S. Patton | | | | | Joined: May 2001 Posts: 7,440 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,440 | Too old to re-arch? Since when does steel age?
A shop that knows what they are doing can re-arch them. | | | | | Joined: Dec 2006 Posts: 184 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 184 | Steel doesn't necessarily age, but I do know from my statics classes that steel has an elastic range, a plastic range and a failure point. If the springs were compressed at some point past their plastic range, they could have some strength issues.
Of course the amount of stress on that scenario would need to be pretty enormous - like beyond 36-50 ksi loading at some point. | | | | | Joined: Mar 2002 Posts: 9,112 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,112 | If the springs, especially the main leaf, have significant rust penetration, their strength will be compromised. Sometimes this damage may be hidden while installed on the truck. | | | | | Joined: Oct 2006 Posts: 4,983 Master Gabster | | Master Gabster Joined: Oct 2006 Posts: 4,983 | I always want to know when I get advice from shops that sell products and service, is their advice tainted by the product they want to sell.
~Jim
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