Author Topic: 3.1 Diff  (Read 249 times)

Offline Robbie23

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3.1 Diff
« on: December 02, 2020, 05:25:18 am »
Can anyone tell me how I can purchase a ring and pinon gear for a 3.1 diff? many thanks

Offline justfreaky

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Re: 3.1 Diff
« Reply #1 on: December 02, 2020, 12:18:51 pm »
Hey Robbie,

Do you mean a 4.10 ring and pinion for the 6.7" 10 bolt Toyota rear end?
Gear ratios for oval track cars are:
3.30, 3.42, 3.58, 3.73, 3.90, 4.10 and 4.30
Road course cars usually use a 2.50 or 2.92

Anyway, to try to answer your question; Salvage yard finds are almost non-existent, as most of these old Toyota's have been crushed or stripped bare. USLC has a deal with Richmond Gears so that you can only purchase a new gear through USLC. I have seen used gears on many of the Facebook pages (both spooled and welded). You can post a wanted ad here on the site and perhaps one of our members will have the ratio that you need. I will tell you that they can get a little pricey! I have seen them listed anywhere between $150.00 to $500.00 (plus shipping). Things like low drag bearings or coated bearings, spooled or welded, used or rebuilt all play in to the price.

Hope that helps you a bit.

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