The only thing I've got Ryan is the information that's available in the parts books, that
which is in the "Catalog of Chevy Truck ID Numbers 1946-1972" and the findings that
people have reported to this and other forums over the past seven years.
The ID Catalog only lists the C & K truck types up to the 3000 series and there are no
4.10 gears listed. Which indicates to me that the 4.57 & 5.14 were the only Eaton gears
used. It makes no distinction as to the suspension.
My 1946-1972 series 10-20-30 parts book show this listing:
Ring and Pinion gear assembly (not sold separately)
68-69 Ser. 20-30 w/4.10 ratio (exc 4/WD)
70-72 Ser. 20-30 w/4.10 ratio
71-72 G-30 w/4.10 ratio
Part number 3933960 gear assembly (41-10T--hypoid) (3934647-3934641)
I did talk with someone this weekend that said he got a 4.10 out of a junked van which must have
been as the parts book indicates, a 71-72 G-30 w/4.10 ratio. But those are quite rare I’m sure.
I should mention that the Dana axle was available in a 4.10 ratio and is listed as;
69-70 Ser.20 w/127” W/B (4.10 ratio)
71-72 Ser. 20 (Conv) w/Dana Axle (4.10 ratio)
Part number 3965146 (41-10T) (Dana 24807X)
And again, every 4.11 gear that I've seen has not been an Eaton HO52 but a Dana and I think I
mentioned this before but the 4.10 gear ratio doesn't show up in any series until the 1968 model year
unlike the '67-72 that is often mentioned in the internet discussions.
Denny Graham
Sandwich, IL
Last edited by Denny Graham; 02/02/2012 12:20 PM.
