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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
Seems like in more of just a planing stage right now. I may go that route one day also. And what I'm going to do before that is to research it on this site. There are guys here that are fantastic in their knowledge on this subject. You should be able to find out about every answer you have. Just spend a few hours checking out all the info in the search forums. By doing this you may even come up with some better ideas.
Almost all BII's have the dana 28 front axle. The only exception is late production 1990 models which have the dana 35. The dana 35 from a 1st gen Ex is a bolt in upgrade for the BII.
All BII's have the 7.5" rear. You can swap in the 8.8" rear from an Ex but you'll need to weld on new mounts.
Lots of guys running big tires on stock axles but non running 1st gen Explorers are cheap enough that it doesn't make sense to not upgrade before spending money on gears and lockers.
Classic Bronco axles, dana 44/ ford 9", are another upgrade route but likely more $ unless you get lucky.
Almost all BII's have the dana 28 front axle. The only exception is late production 1990 models which have the dana 35. The dana 35 from a 1st gen Ex is a bolt in upgrade for the BII.
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Yeah, the D28 is a worthless axle, definitely not worth putting any $$ into (plus, not a whole lot available for it either).
Go with the D35 for sure. The 7.5" rear is usually fine up to 33" tires, although the 8.8" from an Explorer is still worth getting (it would handle 38" tires under the same conditions, and has more gear ratio & locker options available).