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Click on image for the lowdown. 
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| | | Forums66 Topics128,175 Posts1,057,054 Members48,460 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Sep 2007 Posts: 31 Apprentice | | Apprentice Joined: Sep 2007 Posts: 31 | I have a 1949 3100, does anyone know the diameter of the center pin in the rear spring pack? I am referring to the pin that locates the axle in the spring pad that is welded to the axle tube.
Thanks
1949 5 Window 3100
| | | | | Joined: Aug 2008 Posts: 230 Shop Shark | | Shop Shark Joined: Aug 2008 Posts: 230 | i believe it is 1/4 diameter ,no bigger than 5/16 .you should be able to see the top of the stud on the top of the spring pack . | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | "Spring center bolt" Not sure what size it is on the small trucks though, guessing 5/16", or possibly 3/8".
Grigg | | | | | Joined: Sep 2007 Posts: 31 Apprentice | | Apprentice Joined: Sep 2007 Posts: 31 | For all of you holding your breath... it's 0.500"
1949 5 Window 3100
| | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | The 1/2" diameter is just the bolt head right? The actual bolt will be somewhat smaller, 3/8" or 5/16" I'm still guessing.
Grigg | | |
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