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#35458 02/28/2003 3:48 AM | Joined: Jan 2003 Posts: 12 Member | | Member Joined: Jan 2003 Posts: 12 | I'm getting ready to rebuild the differential in my 41 1/2 ton. Any advice from you veterans out there? I'm gonna leave it the 4:11 ratio, and basically replace all the bearings. Thanks for any insight. Matt 
It takes a big dog to weigh a ton
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#35459 02/28/2003 3:52 AM | Joined: Jul 2000 Posts: 504 Member | | Member Joined: Jul 2000 Posts: 504 | Why go through all that work and leave the 4:11 ratio ?
Bill M
53 GMC Hydra-Matic
Home Page
http://home.comcast.net/~bd97/index.html
When you argue with a fool, two fools are arguing..
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#35460 02/28/2003 5:08 PM | Joined: Mar 2000 Posts: 784 'Bolter | | 'Bolter Joined: Mar 2000 Posts: 784 | I agree with 53 4 me. I put 3.55s in my 46 and boy I'm glad I did, what a difference. It's just as much work to swap the gears as it is to replace all the bearings. The whole job isn't that difficult. I'd say save your pennies and get the 3.55s for it. You'll be happy you did. Either way make sure you have access to a dial indicator, you can't do the job without one.
Good luck, if you have more questions we're always here.
George | | |
#35461 02/28/2003 6:33 PM | Joined: Jan 2003 Posts: 12 Member | | Member Joined: Jan 2003 Posts: 12 | Thanks for the insight. I had a feeling everyone would recommend the taller gears. I have always wondered who makes those gears. All the vendors sell them for exactly the same price. It seems to me that they are a set that was made for something else, but also fit these rearends. Sure would be nice to find the source!
It takes a big dog to weigh a ton
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#35462 03/01/2003 3:25 PM | Joined: May 2000 Posts: 424 Shop Shark | | Shop Shark Joined: May 2000 Posts: 424 | They are sold to everyone by Patrick's in Casa Grande, AZ. They run $400 everywhere, and are worth every dime. They do not fit anything else. As far as I know, Patrick has large batches of them run at a gear manufacturing shop. I suspect Richmond Gear, but I'm not sure. Passenger cars had a 3.55 gear set in '50-'54 for powerglide equipped cars, but the ring and pinion are much smaller than the P.U. set and do not interchange. Patrick has designed the '40-'54 P.U. 3.55 gear set as deep as it can be made. A numerically lower ratio is impossible due to the thickness (gets too thin where the teeth are cut through) of the ring gear. | | |
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