78 cheverlet 4x4 axle swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Pookie · 10-18-2003, 10:31 PM

I am swapping from manual to automatic locking axle. I was wondering could I use my original transfer case (which has hi- 2 wheel drive -lo- lo loc) with this automatic locking axle. I have the orignal transer that has hi- hi lock- lo- lo lock. Just wanted to get some other in put. I would like to keep the original in. If any one can give me some in put.

Thanks

**JIMs70GMC** · 10-19-2003, 10:26 AM

Basically you have manual hubs now and will swap in an axle w/ out hubs but has drive flanges and came out of a full time 4wd truck? If your present TC has a shift pattern of (from seat forward) 4hi, 2hi, N, 4 low then I'd say no. Your front rotating assembly will be turning all the time in 2wd and your TC was not made to work like that. Now if the axle being sawpped in has "automatic" hubs then yes because you can disengage them by shifting into 2wd on the tc and backing up 15-20 feet. And then when you shift into 4hi or 4lo then after a few turns they'll lock automatically.

Pookie · 10-19-2003, 02:12 PM

The only thing i know is the axle that i want to put in does not have manual locking hubs. I `m hoping that they are automatic locking. The tc that goes with it has from to seat to front 4hilock-4hi-n-lo-lo loc. The tc that is in my vehecle now has 4hi-2wh-lo-loloc and hubs that you have to turn on the axle to engage in 4 wheel drive. I did not want to change my tc and to just swap the axles.

Pookie

**JIMs70GMC** · 10-19-2003, 04:16 PM

That axle sounds like a full time unit w/ drive flanges. The automatic hubs did not show up until the 80s. Why not get automatic hubs and install those? You could probably get a set for under $50.

10-18-2003, 10:31 PM	#1
Pookie Registered User Join Date: Feb 2003 Posts: 8	78 cheverlet 4x4 axle swap I am swapping from manual to automatic locking axle. I was wondering could I use my original transfer case (which has hi- 2 wheel drive -lo- lo loc) with this automatic locking axle. I have the orignal transer that has hi- hi lock- lo- lo lock. Just wanted to get some other in put. I would like to keep the original in. If any one can give me some in put. Thanks

10-19-2003, 10:26 AM	#2
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Basically you have manual hubs now and will swap in an axle w/ out hubs but has drive flanges and came out of a full time 4wd truck? If your present TC has a shift pattern of (from seat forward) 4hi, 2hi, N, 4 low then I'd say no. Your front rotating assembly will be turning all the time in 2wd and your TC was not made to work like that. Now if the axle being sawpped in has "automatic" hubs then yes because you can disengage them by shifting into 2wd on the tc and backing up 15-20 feet. And then when you shift into 4hi or 4lo then after a few turns they'll lock automatically. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

10-19-2003, 04:16 PM	#4
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	That axle sounds like a full time unit w/ drive flanges. The automatic hubs did not show up until the 80s. Why not get automatic hubs and install those? You could probably get a set for under $50. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

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10-19-2003, 02:12 PM	#3
Pookie Registered User Join Date: Feb 2003 Posts: 8	The only thing i know is the axle that i want to put in does not have manual locking hubs. I `m hoping that they are automatic locking. The tc that goes with it has from to seat to front 4hilock-4hi-n-lo-lo loc. The tc that is in my vehecle now has 4hi-2wh-lo-loloc and hubs that you have to turn on the axle to engage in 4 wheel drive. I did not want to change my tc and to just swap the axles. Pookie



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