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| | | | Joined: Apr 2005 Posts: 381 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 381 | Was an Eaton rear axle standard equipment in a 1948 Chevy 4400 series dump truck? The axle shafts have 10 splines and 21 teeth on the outer end. | | | | | Joined: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | I replied with this on the oldgmctrucks.com site.
No. I don't believe the name for the single speed rear really had any designation other than being called a GM single speed rearend.
I also don't believe all the 2 speeds are even Eatons, although they can share some parts.
Jeff
| | | | | Joined: Apr 2005 Posts: 381 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 381 | Hi rustednuts, Thanks for the reply. wbrowne | | | | | Joined: Mar 2004 Posts: 6,236 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,236 | I'm not aware of any Eaton Rear Axles being factory installed by Chevrolet prior to 1956 when they introduced the 9000 and 10000 Series (2-1/2 ton) trucks. I'm also not aware of any shared parts between Corporate GM and Eaton Rears...maybe a bearing or seal? Both GM and Eaton made Single and 2-Speed rears... Mike B  | | | | | Joined: Dec 2002 Posts: 2,549 'Bolter | | 'Bolter Joined: Dec 2002 Posts: 2,549 | Before 1956, the 2 speed rear axles in Chevrolet's were Timken rear axles. Eaton 2 spd. rears, were available in GMC's much earlier. | | | | | Joined: Mar 2004 Posts: 6,236 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,236 | Thanks Spanky, I didn't know that! I knew GMC started using Eaton's way before Chevrolet did... Mike B | | | | | Joined: Dec 2002 Posts: 2,549 'Bolter | | 'Bolter Joined: Dec 2002 Posts: 2,549 | Yeah Mike, I recently removed a Timken 2 spd. from a '55 1st series Chevy COE that I parted out. Had it, along with the axles sitting in my moms back yard. Would you believe someone came along, & stole it out of her fenced back yard. | | | | | Joined: Mar 2004 Posts: 6,236 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,236 | That takes a lot of nerve. Ya think they knew what it was or was it taken cause scrap is so high? Mike B | | | | | Joined: Dec 2002 Posts: 2,549 'Bolter | | 'Bolter Joined: Dec 2002 Posts: 2,549 | I don't know Mike. They took the differential, but left the axle shafts, & two junk SM420 transmissions, that were next to it. | | |
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