9.5SF Swap

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mattt

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I didn't pay attention to what axle he is working with, but if it is an 05-06 Escalade AXN axle, those do have a tone ring sensor at the very outer end of the axle housing. I posted a picture of it in this thread, when I acquired mine. It is still uninstalled here, as I am dealing with other higher priority issues unfortunately on the 6.0.

 

mattt

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Another bit of info I recently found on the NBS 2wd escalades that came with the elusive AXN 14bolt 9.5sf. Looks like they only offered the AXN in 2005 and 2006. According to LKQ it was not offered in 2004 or before so that narrows down some searching for anyone interested.

Also, It looks like they only came with 3.73s which is good because the NNBS AXN only came with 3.42s best I can tell. I haven't been able to identify if the NBS AXN comes with a G80 or other clutch style posi but here are some RPO sheets of AXN equipped NBSs maybe someone can decode them better than I. I know G80 is for the grenade locker but I do not remember what the code for the factory posi is, can't imagine they put a big axle in a 2wd and left it open.

View attachment 342232
View attachment 342233
View attachment 342234View attachment 342235

Were you ever able to find out if any of the GMT800 AXN axles come with a G80 or other traction device from the factory? I have been trying to find that out also. So far, every one I have seen in person was an open carrier. I posted a request on an Escalade forum for 2wd 6.0 Escalade owners to report back if their RPO list has any G80 or some other traction device, but that hasn't received any replies back so far.

The factory Eaton posi that came in the Trailblazer SS, which also had a unique AXN axle, had an RPO code of G86. I did acquire a TBSS rear axle from a local yard, believe it or not, and I bought it only to harvest the G86 Eaton posi out of it and then selling off the remains. I have not run across any other factory posi or locker RPO codes thus far.
 

ls3_ppv

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Found it on rockauto, axle repair bearing. TIMKEN TRP59047 I think. Probably will just let it ride with the old ones since I’ve hammered in the outer axle bearings at this point.
 

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ls3_ppv

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Had some downtime and got the 14bolt installed. It was bolt in, everything swapped over. Took just about every bit of the gallon of diff juice i bought before it trickled out. I opted to freshen up the parking brake hardware, rotors, brake pads, lug studs, bump stops, even disconnected the brake lines (though you dont have have to even do that) and bleed out the old fluid. Also bought a master bearing kit and installed all new races, bearings, crush sleeve, axle and pinon/yoke seals. Total time from pull in to pull out was about 5 hours with a parts store run and grabbing a bite to eat. Rebuild time was completed prior to the day of install, I spent all day learning how to do that....

All of the tahoe part numbers matched the denali parts that i could find so i just unbolted my 10bolt from the control arms and bolted the 14 bolt back in. I also ended up finding a non-xl denali driveshaft so i have this conversion ujoint ill let go for $20 plus shipping to the next ambitious person who wants to do this. Even blasted and powder coated the new diff cover for the 14 bolt! Only thing i want to caution someone else on is that i do not have a stock exhaust, it dumps before the rear end. So i do not know if stock exhaust clears it or rubs. Also consider replacing your transmission output shaft seal and rear springs top/bottom rubber insulators. One of mine was torn up and i couldn't find it locally so ill have to replace that another time. YMMV!

2008 denali xl 9.5" sf 14bolt rear end sourced
2011 denali non-xl driveshaft sourced
original 2010 tahoe upper/lower controls arms, pan hard bar, sway bar, brake calipers, abs sensors, bump stops, brake lines, struts, end links

mobil delvac1 75w90 gear oil, 1gallon

Big upgrade going from an open diff/8.5"/3.08 gearing to g80 locker/9.5"/3.42 gearing. And 1310 to 1350 yoked driveshaft. Should hold 30psi of boost now...


IMG_8041.JPGIMG_8045.JPGIMG_8046.JPGIMG_8051.JPG
 
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Dantheman1540

Dantheman1540

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Got some downtime and get the 14bolt installed. It was bolt in, everything swapped over. Took just about every bit of the gallon of diff juice i bought before it trickled out. I opted to freshen up the parking brake hardware, rotors, brake pads, lug studs, bump stops, even disconnected the brake lines (though you dont have have to even do that) and bleed out the old fluid. Also bought a master bearing kit and installed all new races, bearings, crush sleeve, axle and pinon/yoke seals. Total time from pull in to pull out was about 5 hours with a parts store run and grabbing a bite to eat. Rebuild time was completed prior to the day of install, I spent all day learning how to do that....

All of the tahoe part numbers matched the denali parts that i could find so i just unbolted my 10bolt from the control arms and bolted the 14 bolt back in. I also ended up finding a non-xl denali driveshaft so i have this conversion ujoint ill let go for $20 plus shipping to the next ambitious person who wants to do this. Even blasted and powder coated the new diff cover for the 14 bolt! Only thing i want to caution someone else on is that i do not have a stock exhaust, it dumps before the rear end. So i do not know if stock exhaust clears it or rubs. Also consider replacing your transmission output shaft seal and rear springs top/bottom rubber insulators. One of mine was torn up and i couldn't find it locally so ill have to replace that another time. YMMV!

2008 denali xl 9.5" sf 14bolt rear end sourced
2011 denali non-xl driveshaft sourced
original 2010 tahoe upper/lower controls arms, pan hard bar, sway bar, brake calipers, abs sensors, bump stops, brake lines, struts, end links

mobil delvac1 75w90 gear oil, 1gallon

Big upgrade going from an open diff/8.5"/3.08 gearing to g80 locker/9.5"/3.42 gearing. And 1310 to 1350 yoked driveshaft. Should hold 30psi of boost now...


View attachment 429117View attachment 429118View attachment 429119View attachment 429120

Nice job! Good thought on that drive shaft swap.
 

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