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| | | Forums66 Topics128,090 Posts1,056,026 Members48,432 | | 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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| | | | Joined: Aug 2009 Posts: 12 New Guy | | New Guy Joined: Aug 2009 Posts: 12 | Hello I was just wondering if all the second series frames are interchangeable from 55-59 chevy to gm, short box and long box
1957 chevy 3200
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | To start with, the entire run was not called second series. There were 2 series of trucks in 1955. The second series was the first of the Task Force Chevrolets and the Blue Chip GMCs.
In US models Chevrolet and GMC frames are different. Canadian GMC trucks used Chevy engines so those may be the same. Also, '55-'57 frames differ slightly in length from '58-'59 frames.
Long bed frames are longer than short bed frames. | | | | | Joined: Apr 2005 Posts: 1,971 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,971 | Long bed frames are longer than short bed frames. I'm glad you pointed that out Cletis.  | | | | | Joined: Aug 2009 Posts: 12 New Guy | | New Guy Joined: Aug 2009 Posts: 12 | So I could use a 55 gmc frame and bolt all my 57 chevy parts to it with little or no modification.
1957 chevy 3200
| | | | | Joined: Jun 2003 Posts: 565 'Bolter | | 'Bolter Joined: Jun 2003 Posts: 565 | The GMC engine is longer so the motor mounts will be different. Not sure on the front sheetmetal/radiator thing.
Jeff
"Do not walk behind me, for I may not lead. Do not walk ahead of me, for I may not follow. Do not walk beside me either. Just leave me alone, you're starting to freak me out."
1957 GMC 150
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | If it is a Canadian GMC it would have had the Chevrolet engines so that part should work. I, too, am not sure about "front sheetmetal/radiator thing". | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | red58 would know for sure, but I'm thinking that there is a difference in the radiator mounting. I know the GMCs have an extra brace that the Chevies do not have that goes from the core support to the firewall.
Bill Burmeister
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