Front spring shackle help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LDO · 01-26-2013, 08:18 PM

I purchased this rebuild kit for my 57 front end. http://www.classicperform.com/Store/.../5559SHK-F.htm

I am a little concerned because it doesn't look like the old stuff I removed. In particular, the threaded pins. My old stuff had nuts on the end of the threaded pins. The new pins don't extend past the shackle plates. Am I to assume that the center (long carriage bolt) bolt keeps the shackle plates squeezed together and that's it?

This kit didn't come with any instructions so I got nothing to reference.

Also, is anyone familiar with torque values for the hardware on the front axle? Didn't find anything in my assembly manual except for the ubolt nuts.

Thanks in advance.

_Ogre · 01-27-2013, 02:34 PM

you are correct, the long bolt holds it together
my rears are the same, it doesn't look very stout, but it works

**mr48chev** · 01-27-2013, 02:49 PM

Your old stuff may have been replacement pins from some vendor who put the nuts on them as part of their design. The ones you have appear to be the factory style but LMC does show a different second series shackle that doesn't appear to use the threaded pins.
http://www.lmctruck.com/icatalog/ca/full.aspx?Page=91

LDO · 01-28-2013, 05:35 PM

Any idea what the torque value would be on this center bolt?

01-26-2013, 08:18 PM	#1
LDO Registered User Join Date: Feb 2011 Location: Senatobia, MS Posts: 1,300	Front spring shackle help I purchased this rebuild kit for my 57 front end. http://www.classicperform.com/Store/.../5559SHK-F.htm I am a little concerned because it doesn't look like the old stuff I removed. In particular, the threaded pins. My old stuff had nuts on the end of the threaded pins. The new pins don't extend past the shackle plates. Am I to assume that the center (long carriage bolt) bolt keeps the shackle plates squeezed together and that's it? This kit didn't come with any instructions so I got nothing to reference. Also, is anyone familiar with torque values for the hardware on the front axle? Didn't find anything in my assembly manual except for the ubolt nuts. Thanks in advance. __________________ Once a Marine, always a Marine! My (Her) 57 Build "Beverly" My 66 Build "Betty" My 85 C10 "Old Blue" Help Me Find "Old Blue" OLD BLUE PART II

01-27-2013, 02:34 PM	#2
_Ogre Registered User Join Date: Jan 2012 Location: Motown Posts: 7,680	Re: Front spring shackle help you are correct, the long bolt holds it together my rears are the same, it doesn't look very stout, but it works __________________ cool, an ogre smiley Ogre's 58 Truk build how to put your truck year and build thread into your signature shop air compressor timer

01-27-2013, 02:49 PM	#3
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,718	Re: Front spring shackle help Your old stuff may have been replacement pins from some vendor who put the nuts on them as part of their design. The ones you have appear to be the factory style but LMC does show a different second series shackle that doesn't appear to use the threaded pins. http://www.lmctruck.com/icatalog/ca/full.aspx?Page=91 __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

01-28-2013, 05:35 PM	#4
LDO Registered User Join Date: Feb 2011 Location: Senatobia, MS Posts: 1,300	Re: Front spring shackle help Any idea what the torque value would be on this center bolt? __________________ Once a Marine, always a Marine! My (Her) 57 Build "Beverly" My 66 Build "Betty" My 85 C10 "Old Blue" Help Me Find "Old Blue" OLD BLUE PART II



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