Toyota gear driven transfer case - 21/23 spline ?

frankenyoter

frankenyoter

No Rain, No Rainbow
Joined
Mar 17, 2009
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Are the outputs to the drive flanges all the same and the spline count is only on the input? I think that’s the case but figured I ask the professionals. It’s been a while since I have been down this road.

So if I’m going to get a 23 spline 4.7 kit, I can start with a 21 spline cases, correct?
 
this might help, I think the turbo case was the only one to have a factory 23 spline to mate up with the R150F. yes, you can swap a 21 to a 23



www.marlincrawler.com

Marlin Crawler’s Transfer Case Bible

This is the ORIGINAL Gear Drive Transfer Case Bible created by Marlin Crawler back in the 90s. All styles are a 2-speed plus neutral design, with a 1.00:1 high range and a 2.28:1 low range.
www.marlincrawler.com www.marlincrawler.com
 
You can do 23 spline in the second case if you do duals, but the one that mates to the tranny has to match the output on the trans. 4 cyl Turbo trans (R151F) is is the only one that was 23 spline that a gear drive case will bolt to.
The v6 trannys (R150F) wont accept a gear drive case without an adapter.
 
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