4.88 Thirds from a runner
Oct 14, 2011 | 04:13 AM
#1
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From: Vermont
4.88 Thirds from a runner
I have the opportunity to purchase 4.88's out of a runner to swap into my truck. It seams like this will be a lot cheaper than paying someone to setup R+P's in my diffs. They are a direct swap as far as I know.
With them out of the vehicle is there any way to verify (besides looking for glaring defects) that they're in good condition?
He wants $500 for both... Would you pay that?
I think it'd be an ideal time to setup a locker too.
With them out of the vehicle is there any way to verify (besides looking for glaring defects) that they're in good condition?
He wants $500 for both... Would you pay that?
I think it'd be an ideal time to setup a locker too.
Oct 14, 2011 | 05:02 AM
#3
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From: Vermont
Oct 14, 2011 | 05:34 AM
#4
That is correct, when switching to a factory Toyota 488 the entire 3rd has to be swapped out.
The large bore hole lines up with the vertical casting line on the 3rd. The reason the bore hole is spaced closer to the ring gear is the actual factory 488 ring is thinner and thus the pinion must be moved closer(by about 1/4").
A normal 410 3rd. The bore hole is recessed under the reference surface by about 1/4" meaning this pinion is spaced about 1/4" farther away from the ring than the factory 488 carriers.
The large bore hole lines up with the vertical casting line on the 3rd. The reason the bore hole is spaced closer to the ring gear is the actual factory 488 ring is thinner and thus the pinion must be moved closer(by about 1/4").
A normal 410 3rd. The bore hole is recessed under the reference surface by about 1/4" meaning this pinion is spaced about 1/4" farther away from the ring than the factory 488 carriers.
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Oct 14, 2011 | 11:57 AM
#9
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From: Peoria, AZ
Good info above. I have an open factory 4.88 front diff as an emergency spare for my locked unit that I got off of craigslist for $40. I have been casually keeping my eye out for a cheap, open factory 4.88 as an emergency drop-in rear spare. Looks like I would have wasted my money...
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