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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jul 2005 Posts: 595 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 595 | here are some more pic's of the 54'. measured the wheelbase today 168" and was wondering about the 2spd rearend, what kind is it? hope to strike a deal on a GMC fwd motorhome chassis this week,located 3 of them to choose from. | | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | Spanky will have the definitive answer, but, my guess is that if it the same as used on a 54/55 2-ton COE, it's an Eaton 2-speed rear-end with vacuum-assisted shifter. | | | | | Joined: Dec 2002 Posts: 2,549 'Bolter | | 'Bolter Joined: Dec 2002 Posts: 2,549 | Tim, micron, The Chevrolet's from this era had Timken 2 spd. rear axles. I've got one in a '55 1st series Chevy COE,rolling chassis, out back. | | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | Spanky,
Did the 54/55 GMC 350 have an Eaton 2 speed?
Tim | | | | | Joined: Dec 2002 Posts: 2,549 'Bolter | | 'Bolter Joined: Dec 2002 Posts: 2,549 | Tim, The GMC's utilized the Eaton 1350 2 spd.(which is almost identical to the splined flange Timken 2 spd.Chevy used)& the Eaton 16600, (which used the bolted flange). | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Tim's 350 has a splined flange two speed. I pulled the caps off, slid the axles out, and reinstalled the caps to tow it home.
Grigg | | | | | Joined: Dec 2002 Posts: 2,549 'Bolter | | 'Bolter Joined: Dec 2002 Posts: 2,549 | O.K., That would be the Eaton 1350, for Tim's COE. microns, should be the Timken 2 spd. | | | | | Joined: Jul 2005 Posts: 595 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 595 | thanks! is their any numbers for positive id or something i should take picture of to help id rearend? which rear is better/more desirable? | | | | | Joined: Nov 1995 Posts: 5,746 24601 | | 24601 Joined: Nov 1995 Posts: 5,746 | Micron -- not to change the subject .. in your web shots, I'm curious about your GMC that you pulled the COE with -- I see it's been upgraded to newer wheels and tires -- what size wheels and tires are on it?
Thanks,
John
~ John A kid raised on Hotwheels, Matchbox and Tonka cannot be reasonably expected to own only one vehicle as an adult. 1949 Chevrolet 3804In the Legacy Gallery | In the Gallery Forum1973 IH 1310 Dump1963 Kaiser M38A12001 International/AmTran RE3000 "Skoolie"2014 Ford E-350 4x4 (Quigley) | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | That's Grant's (HeavyHauler) GMC, and yes he has new 22.5" wheels with 10 lugs on 8.75". I believe he is running 10R22.5 tires.
Grigg | | |
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