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What diameter ring gear and what ratios in the rear axle of 2007-up Tundra?
I am currently considering major axle upgrades to several vehicles, incl. my 1994 Ford Ranger (as a 4x4 conversion contingency). The Tundra axle, prob. from either Toyo or Aisin, looks good for build as a full-float, as the current-production design is a semi-float with end-plate axleshaft retainers and an ABS-equipped third member--sort of an upgrade from the 9" Ford design still in production at Currie Enterprises. I favor field-rebuildable axles (my Ranger's stock 220mm Visteon can't be field-rebuilt, unlike the 9"; unfortunately the 9" doesn't take ABS hardware). Also, what ring-and-pinion ratios and what slip/spin-control differentials are available?
4.0-liter with 5-speed ECT
4x2 3.909/9.5 in.
4.7-liter with 5-speed ECT
4x2 and 4x4 - Standard or Sport Appearance Package 3.909/9.5 in.
4x2 and 4x4 - Tow Package 4.100/9.5 in.
5.7-liter with 6-speed ECT
4x2 and 4x4 - Standard or Maximum Payload Package or Sport Appearance Package 4.100/10.5 in.
4x2 and 4x4 - Tow Package 4.300/10.5 in.
Transfer case, high/low (4x4 only) 1.000/2.618
All of those axles are way over sized for the engines they put in there. I doubt there will be any axle problems on any Tundra.
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