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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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#76255 04/12/2007 4:12 PM | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | So what do I call my rear end, besides big old rear end!!
I was at the engine builders to day checking up on the progress of my latest 216 head acquisition. The subject of rear end ratios came up in regards to keeping the babbit pounder running a little longer and I told him that the 4.56 was about the only choice I had for a 1950, 3604. Him being the Off-the-Road, 4x4 wheeler, truck pullin’ type, asked me what model rear end the truck had in it. Standing there dumb founded all I could come up with was, oh, it’s a GM! Upon which, he turned and went back into the office and shut the door in the certified dummies face.
So what make and model is the stock rear end in a 1950, 3604 trucks other than a GM?
Denny Graham
Sandwich, IL
Denny G
Sandwich, IL
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#76256 04/12/2007 5:49 PM | Joined: Mar 2004 Posts: 874 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 874 | Denny,
I believe that would be an Eaton HO52.
I have one in mine too...
Steve | | |
#76257 04/12/2007 6:41 PM | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | Denny,
I think that they call the 1 Tons HO72 and as stated yours would be a HO52. The ratio should be 4.57. I guess that you know that you can install a later pumpkin of the 4.10 variety?
Fred | | |
#76258 04/13/2007 2:50 AM | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | An Eaton HO72, OK, thanks, now I'll be able to dazzle him tomorrow. Any idea where I can find that info in print?
Yep, you are correct o' mundo Fred, 4.57, I'm just in the habit of saying 4.56, 4.11 etc., some left overs from the days when I played with the cars and hung around the drag strips.
I have been asking round junk yards for many a month now and that 4.10 would be a very rare bird. I'd like to find, even a junker so I could do some comparisons up on the surface plate. I've been wondering for a while if there are any ring and pinions out there, that could with some machine work be adapted to fit the 3/4 ton ADs carrier. I wish I had a collection of a few 3/4 ton junkers to experiment with.
Tks again guys.
Denny Graham
Sandwich, IL
Denny G
Sandwich, IL
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#76259 04/13/2007 3:55 AM | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 | the torque tube rearend in my 52panel is coming out soon. Does it have an Eaton HO2 in it? I think(?)mine has a 4:11?? It'll be up for grabs soon, very soon  edit: I'm putting the 56 pumpkin in mine which is a 3:90....so I'm told? Its still in the shipping container so I have not checked it. Denny, do you need a 52??? | | |
#76260 04/13/2007 3:58 AM | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | Denny,
I got my 4.10 from a wreckers that was about to call in the crusher. The guy looked for a week and found one. Believe it or not, it was in a 1/2 Ton that someone had switched rearends on. I believe it is from a 71.
Fred | | |
#76261 04/13/2007 2:01 PM | Joined: Jul 2006 Posts: 707 Shop Shark | | Shop Shark Joined: Jul 2006 Posts: 707 | When I changed mine to 4.10 (from 5.14) I had to change the carrier as well, and shorten the drive shaft slightly. But I love the new gear; it is exactly what I wanted. The carrier I have is '72 and earlier 3/4 and 1-ton.
1951 3800 Be the change you want to see. -hotshoe
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#76262 04/15/2007 5:59 PM | Joined: Jul 2006 Posts: 149 Shop Shark | | Shop Shark Joined: Jul 2006 Posts: 149 | Originally posted by Denny Graham:
So what do I call my rear end, besides big old rear end!!
Denny Graham
Sandwich, IL Well you could always refer to it as...(drum roll please)....a Badonkadonk butt..... sorry.... couldn't resist....had to go there...<grin> Michael
\'48 chev 2-ton boom truck (Boomer) '49 Chev 2-ton flat bed '65 Chev 35ft school bus '88 GMC 6500 '72 Superior 26ft class "A" coach '50 Farmall "M" '71 MGB GT '68 Austin-Healey Sprite '65 Austin-Healey Sprite and various other odd British cars and lots of old radios..... Although we know what the speed of light is..... What I want to know is... How fast is the speed of DARK??
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