li'lredwagon Posted February 6, 2007 Share Posted February 6, 2007 Hi. I'm having to replace a front half-shaft on my 1988 GL-10 Turbo wagon. It's a 4-speed AT full-time 4WD. I've read through some of the past postings, but am still slightly confused. From what I've seen it appears that MT Turbos have a 25-spline count on the shaft and AT Turbos have a 23-spline count on the shaft. Is this correct? I'd like to make sure that I'm getting the right one before I go ordering the thing. Thanks much. Quote Link to comment Share on other sites More sharing options...
del Posted February 6, 2007 Share Posted February 6, 2007 i to own a 88 gl-10 that came with a 4-speed auto. i converted it to the 5speed dr. had to change the axles to smaller ones. never did count the splines and i believe the 25 spline are larger, so my vote will be, yours will have 25 splines. hope this helps del Quote Link to comment Share on other sites More sharing options...
Skip Posted February 6, 2007 Share Posted February 6, 2007 thanks to Turbone and a quick search Quote Link to comment Share on other sites More sharing options...
li'lredwagon Posted February 6, 2007 Author Share Posted February 6, 2007 Never mind. Got the answer from Calebz. The 3-speed AT turbos are 23-count. The 4-speed AT turbos are 25 count. Quote Link to comment Share on other sites More sharing options...
Gloyale Posted February 7, 2007 Share Posted February 7, 2007 I have a full time 4WD 4speed automatic in my GL. It does in fact have 25 spline stubs. 3speeds have 23. I always end up having to order the axle for the manual tranny turbos. The part stores just don't have enough info about the fulltime 4wd models Quote Link to comment Share on other sites More sharing options...
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