94 f150 4x4 front diff
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94 f150 4x4 front diff
Can anyone tell me if a dana 44 track loc out of a 85 bronco will fit in my 94 f 150,this is the front were talking about not the rear.The track loc had 350 gears on it in the bronco,my truck has 355 gears with open diff.My truck has track loc in the rear,I want to put it in the front also.Can I use my gears on the track loc? The dana build tag numbers are 610198-16 on the track loc.
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No, you can not use two diffrent gear ratios on one truck. If one axle has 3.55, you have to use a 3.55 in the other. Even if they are close together, like say 4.10 and 4.11 gears, you still couldn't. But you may be able to use the ring gear from your open differential and bolt it to the trac loc unit.
Cargo Master
Joined: Jun 2002
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From: Aurora,Colorado
Originally Posted by RotGrubestier44
No, you can not use two diffrent gear ratios on one truck. If one axle has 3.55, you have to use a 3.55 in the other. Even if they are close together, like say 4.10 and 4.11 gears, you still couldn't. But you may be able to use the ring gear from your open differential and bolt it to the trac loc unit.
It isnt unusual for manufacturers to equip 4x4s with different ratios from the factory.
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I was wondering if just the carrier would work(the track loc),I know the different gears wont work.I just need to know if the track loc its self will work in my front end.and if so can I use my 3:55 gears on it. Thanks for the help.
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From: South Carolina
Your Bronco front differential carrier should work in the newer housing. You can mismatch by a point or two (pairing 3.55 and 3.54 is fine, Ford trucks come this way from the factory) but I think pairing 3.50 and 3.55 would be too much of a stretch. The gears are the same, so you can re-use your '94 front gears on the '85 locking differential.
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Well, I stand corrected. I was always instructed to put the same gear ratio front and rear, regardless. I have also seen an incident where somebody was misinformed and put a 4.10:1 in the front, and a 3.73:1 in the rear, and it screwed up his transfer case, front differential, and an axleshaft. It makes sense for there to be some small margin of leeway there, but personally, I would rather be safe (use the same ratio) than sorry (miscalculate and spend even more money).
Last edited by RotGrubestier44; Dec 17, 2005 at 11:01 PM.
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Post Fiend
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From: Topsfield, MA
Moved to appropriate forum.
They need to be within 1% of eachother for proper operation.
Most often then not, you cannot put a 4.10 or 3.55 front and rear. The Dana axles are usually .01 less. So if your rear axle has a 3.55 than the front is a 3.54. Or a 4.10 and a 4.09...thats how they're done.
FYI, some purpose built trucks have different ratios - it can be done sucessfully if 4wd is not used on high traction surfaces. As long as the tires can slip to relieve the driveline torque, its ok.
They need to be within 1% of eachother for proper operation.
Most often then not, you cannot put a 4.10 or 3.55 front and rear. The Dana axles are usually .01 less. So if your rear axle has a 3.55 than the front is a 3.54. Or a 4.10 and a 4.09...thats how they're done.
FYI, some purpose built trucks have different ratios - it can be done sucessfully if 4wd is not used on high traction surfaces. As long as the tires can slip to relieve the driveline torque, its ok.
Last edited by MustangGT221; Dec 18, 2005 at 12:38 PM.
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