mj.87 Posted November 30, 2012 Share Posted November 30, 2012 I'm looking for a yoke for my 29 spline Chrysler 8.25 rear end. Anyone have one? Link to comment Share on other sites More sharing options...
mvusse Posted November 30, 2012 Share Posted November 30, 2012 I'm looking for a yoke for my 29 spline Chrysler 8.25 rear end. Anyone have one? I need one as well, also in Ohio. Link to comment Share on other sites More sharing options...
JFAComanche6 Posted December 5, 2012 Share Posted December 5, 2012 I think I have one sitting around, I would have to check if its a 29 spline, but it probably is. Link to comment Share on other sites More sharing options...
mvusse Posted December 5, 2012 Share Posted December 5, 2012 The yoke is the same for both the 27 spline and the 29 spline axles. Only things different are axle shafts, spider gears and maybe the carrier. Link to comment Share on other sites More sharing options...
JFAComanche6 Posted December 6, 2012 Share Posted December 6, 2012 Weird, it appears to be a 26 spline yoke... I couldve swore I got it of a chrysler 8.25 Link to comment Share on other sites More sharing options...
mvusse Posted December 6, 2012 Share Posted December 6, 2012 The 27 spline/29 spline on the 8.25 is the spline count on the axle shafts and spider gears. This has nothing to do with the spline count on the yoke/pinion shaft. Link to comment Share on other sites More sharing options...
JFAComanche6 Posted December 6, 2012 Share Posted December 6, 2012 Oh, ha, duh, my bad. I didnt read it right. So yea I should have the right yoke, I pulled it off a 90-something Cherokee at the junkyard a few years ago and havent used it, since I'm still using the Dana 35. Out of curiousity mvusse, what kinda mpg does your 2.5 Comanche get? Link to comment Share on other sites More sharing options...
mvusse Posted December 6, 2012 Share Posted December 6, 2012 Stock 3.55 gears AX4, bit larger than stock tires (235/75R15 or about 29" versus stock 205/75R15 which is about 27", speedo is off by about 5mph at highway speeds) To Chicago and back, on the way there, 75mph for a few hundred miles on the turnpike, pretty much flat grade I got 19mpg in 4th gear with my AX4. On the way back I took a different road and cruised 60 the whole way and got 27mpg. Clearly, at 75mph the engine is revving way past the sweet spot for mileage. Note that an AX5 with the factory 4.10 gears has the same final drive ratio in 5th as the AX4 does in 4th with it's 3.55 gears. So I decided to swap in an AX5 but keep the 3.55 gears. 5th is about gutless, but headed north I tried again. At 75mph I now get 24 mpg (way better than the 19 without the 5th gear), at 60 it is still 27 mpg. This is on summer gas, winter mileage will be worse. Mixed driving year round I get 20-21 mpg averaged over 16,000 miles so far. I may at some point swap in an AX15 and regear the axles as its overdrive is a lot deeper than an AX5's. And on topic: since this is his thread, the OP gets first dibs on that yoke. Link to comment Share on other sites More sharing options...
JFAComanche6 Posted December 7, 2012 Share Posted December 7, 2012 Thats awesome mileage, I might consider a 2.5 as a D.D.... Link to comment Share on other sites More sharing options...
mvusse Posted December 7, 2012 Share Posted December 7, 2012 When it was still stock my 87 4.0 would get 24mpg on the highway if I kept the speed down to 60mph, and mixed mileage of 17 until I put the big tires under it. Link to comment Share on other sites More sharing options...
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