Ring and pinion

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01-19-2012, 04:25 PM

Utah4Runner86

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Ring and pinion

I need to regear my front diff - will a 4.3 ring and pinion from any 7.5" diff work as long as it's not reverse cut? No yards in town have 4runner/truck gears, but one has 4.3 gears from the back of an old Supra - will they work?

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01-19-2012, 05:27 PM

MudHippy

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Quote:

Originally Posted by Utah4Runner86

- will a 4.3 ring and pinion from any 7.5" diff work as long as it's not reverse cut? No yards in town have 4runner/truck gears, but one has 4.3 gears from the back of an old Supra - will they work?

So I've been told. I've never tried it, but I used to have some 7.5" 3.58s out of a 92 2WD PU laying around. And they looked exactly the same as the 4WD 7.5" 4.10 ring and pinion I compared them to side by side. Anyhow, I'm pretty sure it's been done without complications...or we'd have heard something by now...that's how I know that all 7.5" carriers aren't compatible BTW...been tried already...with limited success...

Last edited by MudHippy; 01-19-2012 at 06:55 PM.

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01-19-2012, 07:25 PM

snobdds

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They should. I believe the 4runner also came in a 4.30 on a auto tranny and the 28 inch tire option.

http://www.4crawler.com/4x4/4R_TechInfo.shtml

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01-20-2012, 03:12 AM

Utah4Runner86

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Yeah, mine is the the auto with 4.3 gears. I replaced the front diff, and the gears are wrong.

Thanks guys!

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01-20-2012, 02:46 PM

ZUK

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Quote:

Originally Posted by Utah4Runner86

Your front diff has 7.5" low pinion 4.3 gears....I just found out and edited this... some of the 1985 Supras/Celica's do have the 7.5" ring gear (I have one on the work bench right now5-9-12).

ps----If you need it, I have a low pinion 7.5" 4.3 ring and pinion for 75...shipped to slc.
ZUK

Last edited by ZUK; 05-09-2012 at 12:15 PM. Reason: bad info...needed clarifying

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01-20-2012, 04:30 PM

Utah4Runner86

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Quote:

Originally Posted by ZUK

Your front diff has short pinion head 4.3 gears....I think the 4.3's from rear-end applications are long pinion head...so that might not work out for your front.

ps----If you need it, I have a short 4.3 ring and pinion for 75...shipped to slc.
ZUK

You got a deal, thanks gear man! PM comin' your way.

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