Straydog954 Posted May 13, 2024 Share Posted May 13, 2024 Can anybody explain what the difference is between a CRD931A and a CRD93 rear rear diff. Is one better than the other? Quote Link to comment https://www.bigmacktrucks.com/topic/74158-crd931a/ Share on other sites More sharing options...
Drive_Train_Tech Posted March 9 Share Posted March 9 A CRD93A (not 931a) has a bigger 2.374" 46 spline yoke spline which uses a larger diameter 46 spline yoke and 3 inch id seal also used on the front differential power divider. The crd93 pinion is 39 spline by 2 inch. If I remember correctly the pinion retainer might also be different to use with bigger bearings but everything else is similar. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74158-crd931a/#findComment-571001 Share on other sites More sharing options...
kt_Engineer Posted Friday at 05:08 PM Share Posted Friday at 05:08 PM On 5/13/2024 at 7:09 PM, Straydog954 said: Can anybody explain what the difference is between a CRD931A and a CRD93 rear rear diff. Is one better than the other? 93"1" is designation for IWPD - Inter-wheel power divider i.e CAM limited slip differential. 93 is standard differential. Since CRD92/93 did not have inter-wheel diff lock, the IWPD is better choice for slippery conditions (though it is useless if one of the wheels is spinning on ice). 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74158-crd931a/#findComment-571762 Share on other sites More sharing options...
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