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Old 05-18-2020, 11:50 PM   #4
farmall
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Join Date: Jun 2011
Location: Central OR
Posts: 655
Re: 69 C20 drums to discs from 74 C30-Is this doable?

I am not sure if the cross member will bolt up.

Will the spindles bolt up is a better question and can you run C20 hubs and rotors on C30 spindles.

Bearing and ball joint part numbers will tell you. You may need to swap steering parts as well.

Open up 3 rock auto pages and compare part numbers.

I am going to try 80s spindles on my 71 because the rotors are NLA.

I have the whole cross member dust cap to dust cap to play with.
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1955 GMC 250 8 Flatbed
1971 C30 157" 350 4spd 10' Flatbed
81 GMC K30 CnC 9' Flatbed 454 T400
89 GMC Jimmy Stock https://67-72chevytrucks.com/vboard/...d.php?t=810958
71 LT1 Convertible, 72 Coupe
69 CJ5, 75 CJ6, 67 M715, 72 M35A2 Bobbed, 95 XLC2
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