Straydog954 Posted July 11 Share Posted July 11 Hi does anybody know if crd 150/151 differentials will bolt directly into crd 92/93 housings ? Quote Link to comment https://www.bigmacktrucks.com/topic/75775-another-rears-q/ Share on other sites More sharing options...
kt_Engineer Posted July 16 Share Posted July 16 On 7/11/2025 at 8:29 AM, Straydog954 said: Hi does anybody know if crd 150/151 differentials will bolt directly into crd 92/93 housings ? Yes. CRD150/151 will bolt on to the axle housing on CRD92/93. Depending on vintage of CRD92/93 you will need to change the axle shafts. Quote Link to comment https://www.bigmacktrucks.com/topic/75775-another-rears-q/#findComment-579209 Share on other sites More sharing options...
Straydog954 Posted July 18 Author Share Posted July 18 Thank you. I was wanting to add diff locks to my truck while changing my rear axle ratio due to a transmission replacement that has a different final drive ratio. I’m getting a complete cut off so I will have all parts. Quote Link to comment https://www.bigmacktrucks.com/topic/75775-another-rears-q/#findComment-579373 Share on other sites More sharing options...
Straydog954 Posted July 21 Author Share Posted July 21 On 7/16/2025 at 10:42 AM, kt_Engineer said: Yes. CRD150/151 will bolt on to the axle housing on CRD92/93. Depending on vintage of CRD92/93 you will need to change the axle shafts. Are the diff dimensions the same or would I need to modify drive shaft lengths? Quote Link to comment https://www.bigmacktrucks.com/topic/75775-another-rears-q/#findComment-579521 Share on other sites More sharing options...
kt_Engineer Posted Monday at 03:47 PM Share Posted Monday at 03:47 PM (edited) On 7/21/2025 at 7:19 AM, Straydog954 said: Are the diff dimensions the same or would I need to modify drive shaft lengths? Depending the vintage of CRD92/93 (the diff side gears have different version of splines) you might need to change the axle shafts. axle shaft lengths are identical. Edited Monday at 03:47 PM by kt_Engineer Quote Link to comment https://www.bigmacktrucks.com/topic/75775-another-rears-q/#findComment-579992 Share on other sites More sharing options...
Straydog954 Posted Tuesday at 11:54 AM Author Share Posted Tuesday at 11:54 AM 20 hours ago, kt_Engineer said: Depending the vintage of CRD92/93 (the diff side gears have different version of splines) you might need to change the axle shafts. axle shaft lengths are identical. I was referring as to wether or not the dimensions would be the same from the transmission to the front rear and then from front rear to rear rear,not the axle shafts. Quote Link to comment https://www.bigmacktrucks.com/topic/75775-another-rears-q/#findComment-580050 Share on other sites More sharing options...
mechohaulic Posted Tuesday at 02:07 PM Share Posted Tuesday at 02:07 PM 2 hours ago, Straydog954 said: I was referring as to wether or not the dimensions would be the same from the transmission to the front rear and then from front rear to rear rear,not the axle shafts. 1- if you are adding a front rear diff lock the distance from transmission yoke to front rear yoke should be slightly shorter if memory is correct. the lock out housing is longer by not much. driveshaft slip yoke might compensate. 2- stating you have complete cut-off, intermediate driveshaft should be there which in any case should be same as yours. rear to rear might be same? 3- why isn't the complete cut off being swapped over ? Quote Link to comment https://www.bigmacktrucks.com/topic/75775-another-rears-q/#findComment-580053 Share on other sites More sharing options...
mechohaulic Posted Wednesday at 12:59 AM Share Posted Wednesday at 12:59 AM On 7/18/2025 at 8:15 AM, Straydog954 said: Thank you. I was wanting to add diff locks to my truck while changing my rear axle ratio due to a transmission replacement that has a different final drive ratio. I’m getting a complete cut off so I will have all parts. never explained the transmission replacement ???? same with different ratio ??? which total length is same or different transmission having different over all length ?changing yoke to yoke dimension! pictures ??? numbers ???? Quote Link to comment https://www.bigmacktrucks.com/topic/75775-another-rears-q/#findComment-580082 Share on other sites More sharing options...
Straydog954 Posted yesterday at 02:00 AM Author Share Posted yesterday at 02:00 AM Going from a T2070 to a 12 speed and the 5.73’s are too slow so changing diffs out. Swapping a trunnion is prob a pia. so I figured I would swap diffs. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75775-another-rears-q/#findComment-580113 Share on other sites More sharing options...
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