Join Date: Apr 2001
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Re: cj5/cj7 dana 30 interchangeability
like Will said... same provided both are drum or both disc.
biggest disc to drum difference -
Disc brake wheel hubs have wheel mount flanges machined on both sides while drum brake wheel hubs are machined only on outside.
Drum brake spindles are straight (same diameter). Disc brake spindles have step up in diameter near the knuckle. Therefore the ID of inner wheel bearing is larger on disc brake models (OD is same). These can be interchanged provided you match the correct wheel bearing to spindle.