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Old May 6, 2009 | 03:16 PM
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berm84's Avatar
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From: nj
a dumb question

can i put a rear 3rd member in my front 8in or will my tires spin oppisite
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Old May 6, 2009 | 03:19 PM
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A rear third will work in your front end if it fits but IFS front diffs are 7.5" and I'm not 100% sure but I don't think any of the earlier SFA trucks had 8" fronts either.
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Old May 6, 2009 | 03:20 PM
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I'm pretty sure they would spin opposite. ?? SFA were the 8".
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Old May 6, 2009 | 03:22 PM
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Really? I think it would work... people put high pinion front 3rds in their rears don't they?
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Old May 6, 2009 | 03:25 PM
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Originally Posted by flashkl
Really? I think it would work... people put high pinion front 3rds in their rears don't they?
Bad idea with the HP yota 3rds. they have oiling issues in the rear
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Old May 6, 2009 | 03:25 PM
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Well, it is possible that I'm wrong. It happened once before. I'll never forget that day. It was a Tuesday.

Does the transfer case change the rotation of the front DS? If it does, meaning the rear spins counter-clockwise and the front clockwise while facing the pinion, then it should work. I've never paid close attention to it.
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Old May 6, 2009 | 03:27 PM
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And yes you can put your rear 3rd into a 8" SFA
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Old May 6, 2009 | 03:31 PM
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Originally Posted by fillsrunner4
And yes you can put your rear 3rd into a 8" SFA
Well there we go.

Originally Posted by Ardent
Well, it is possible that I'm wrong. It happened once before. I'll never forget that day. It was a Tuesday.
I remember that day too i think. It was a bad day. Everything got dark.
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Old May 6, 2009 | 07:02 PM
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Originally Posted by berm84
can i put a rear 3rd member in my front 8in or will my tires spin oppisite
wow this thread is a bit of a mess.

the answer is yes you can put your rear 3rd in the front, they are the same thing. As long as you have a solid front axle.

Im not sure where the HP 8" came from but those are disigned for front 3rds cause they are reverse cut. You can put it in the rear (technically) but you will be running on the, much weaker, coast side.
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Old May 6, 2009 | 07:09 PM
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That post is correct.

When you spin a low pinion 3rd around, its still turning the same direction. When you spin a high pinion reverse cut around, you are now running on the coast side of the gear which is inherently weaker.
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Old May 8, 2009 | 03:05 PM
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From: ontario
The front and rear thirds are exactly the same, but the front runs the opposite direction as the rear (gears run on the coast side of the R&P) due to driveshaft rotation. They are still entirely interchangeable! If unsure, check www.gearinstalls.com shows ZUK rebuilding front and rear toyota gear sets, and explains the drive sides of the ring and pinions.
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Old May 14, 2009 | 08:56 AM
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From: nj
thanks it is a sfa
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