Swapping to 29 spline axles
#1
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Year: 1996
Model: Cherokee
Engine: 4.0
Swapping to 29 spline axles
Getting ready to regear to 4.88s and get a detroit locker in rear. Is it worth it to ditch my 27 spline rear axles in my 8.25 and move to 29's while I am at it?
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Year: 1997
Model: Cherokee
Engine: 4.0L
If you're getting a full case locker, get the 29 spline and grab a pair from the junk yard. Might as well go big spline wise so you're not regretting getting a 27 spline locker wishing you had gone up to 29 spline
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Year: 1999
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Yes do that swap for sure I run the 29 splines with my Detroit Locker and 35" tires. A pair of stock axles are cheap from the JY and I also carry spares as if something breaks I want it to be them and not locker or gears.
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2 splines aren't gonna make that axle break like a Dana 35. You still have a way larger ring and pinion in the 8.25. If you're swapping to full case locker then it can't hurt.
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#10
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i concur ,you should do that swap. that way in the future go to 29 spline alloy shafts then you really getting close to bullet proof.
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Year: 97
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I wasn't asking about 1541 shafts. I'm talking about the 25% decrease in strength between a stock 29 spline shaft and a stock 27 spline shaft. That's a drastic decrease. Its kinda hard to believe for .04" difference in diameter between shafts.
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I was giving the op an example of my experience with the1541H shafts.
Which have an approximate 55% higher yield strength than standard
1040 carbon steel.
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Material wise the 1541h is only 25% stronger than 1040/1050 shafts. Most companies state that right on their websites. I'm not believing the 25% between stock shafts.