741 Ring and Pinion Bearings

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brentwab

brentwab

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I am trying to order new 3.73 gears for my 67 Cuda, which has a 8.75 741 case. I continue to see two different carrier bearing kits; one part number is LM104912/49 and the other is 25520/90. Does anyone know the difference?
 
I only have one of my books here at the moment but it's showing the '68 and older carriers using the 25520/90 bearings and the '69 and new ones using the 2852728/9'S which is probably the Timken LM numbers you listed. As for the actual specs difference....I'm not sure....I'd have to put some calipers on each of them. If nobody knows before I get a chance, I'll see if I have a set of each and measure them.
 
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