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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: Feb 2007 Posts: 190 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 190 | I just found out my 47 has a Rockwell 2 speed rear end. Do you guys know is that the axle that a COE would of came with in those years? I have heard of Eaton 2 speeds. I am pretty much a novice at these old trucks, but I had not even heard of a Rockwell before. I could not find it named in my manual, just was curious. I have a friend looking at a 53 6400 - would that be a Rockwell 2 speed also? and the correct engine a 235? Thanks for any info, Tom. | | | | | Joined: Dec 2002 Posts: 2,549 'Bolter | | 'Bolter Joined: Dec 2002 Posts: 2,549 | I'm not as sure about the '41-early '47's, but the late 47-'55's would have had a Timken 2 speed rear axle in them. My '46 Chevy conventional 2 ton, has a 2 speed Timken rear axle in it also. You would more than likely find a Eaton rear axle in a GMC. | | | | | Joined: Dec 2002 Posts: 2,549 'Bolter | | 'Bolter Joined: Dec 2002 Posts: 2,549 | A quick look in my Chevrolet Master Parts Catalog, shows the same vacuum shift Timken 2 speed rear axle, listed for all '46-'55 1st series, Chevrolet 2 ton trucks. | | | | | Joined: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | The 53' should originally have come with a 216 or 235 babbited engine.
Jeff | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | I think that all 1947-53 Chevrolet COEs came standard with the low-pressure 235 engine.
In 1954 the high-pressure 235 engine was standard on all Chevrolet COEs and the new 261 engine was an option. | | | | | Joined: Nov 2000 Posts: 1,399 Camp Commandant | | Camp Commandant Joined: Nov 2000 Posts: 1,399 | Yep, Vacuum Timken 2spd rear in my truck too. | | | | | Joined: Feb 2007 Posts: 190 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 190 | Thanks for the info guys, dont know what my brother in law is going to do about the 53 yet but I passed the info to him thanks again. | | |
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