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Click on image for the lowdown. 
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12 members (1955 1 Series, TUTS 59, wilbur53, 3B, mick53, RdsLessTaken, carbking, DaveV, Gdads51, Joe H, tclederman, KEVINSKI),
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Global Mod,
Mod | | | Forums66 Topics128,281 Posts1,058,473 Members48,490 | | 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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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| | | Joined: Dec 2008 Posts: 337 Shop Shark | | Shop Shark Joined: Dec 2008 Posts: 337 | from what i understand the 60-62 had the "x" frame and the 63 and up were box?
right? It's actually just the opposite. The 60-62 frame has the X member and is mostly boxed, the 63-66 design has open C channel side rails. To make up for the loss of strength with elimination of the X member, it was advertised the 63 frame was made of tempered steel. The side rails of the newer frame are also 1 inch taller in the area where the motor mount towers attach. | | |
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A good Tech Tip
