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Old 04-27-2014, 06:11 PM   #10
SS Tim
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Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,507
Re: Need 1972 C30 rear brake shoe and seal data

On a C30 the 13" x 2-1/2" brakes were standard as a SRW and this included the 157" wb. The two brake options would be with the R05 DRW and the H22 11K rear axle. However some deeper checking is showing that the H22 was not available with the 400 or automatic and included a 6.17 ratio.
It would seem that your truck would indeed have a H072 unless it is some fleet option rear.
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