Quick question about axles n' hubs and 3/4 ton stuff - The 1947 - Present Chevrolet & GMC Truck Message Board Network

munice · 08-09-2010, 10:03 PM

Hey guys and gals, I'm looking at picking up a 78 GMC K20 (for my axle swapping project..) it has a 14bolt FF rear and Dana 44 front, im not sure though if this would still be a full time 4wd truck or not? I have a notion to think that 79 was when they stopped using NP203s but im not sure.. Is it true that one can just put locking hubs on an axle that came out of a fulltime system? (going into my truck with a part time setup) Ive scanned the forum about this too...(todd this is what happened to the frankentruck right?) The other thing I heard was that Dana 44s use the same locking hubs as the GM 10 bolts (which would be great cause i could rob them out of my stock front axle)

Davidmichael · 08-09-2010, 10:17 PM

I am not sure about the hub from 3/4 to a 10 bolt, but that's the set up I got in one of my rigs. it's an all time 4x4 but got locking hubs. The drive shaft still spins but with the hubs unlocked the tires do not move.

87 V20 Scottsdale · 08-09-2010, 11:21 PM

I thought they were using 10 bolt front ends by '78? If the truck originally had an automatic tranny then it had a full time t-case; and yes you can buy a part-time conversion kit. I'm not sure about the interchangeablility of the D44 and 10 bolt hub locks. I DO know that they were using 10 bolt front ends in '79 because that's where I got the axles for my swap on my V20.

asphaltburner · 08-10-2010, 12:05 AM

Yo! PM me!
FRANKENTRUCK has Dana 44 front with Warn locking hubs. Rear is 5560 lb rated full floating. Both are 4.11:1.
FRANKENTRUCK started as a '78 with an NP203, corporate, full-time 4x4, front axle and rear rated at about 4600 lbs. Got my axles from the '73 flatbed and went with an ORD NP205 twin-stick.
Glad I saw your post!
Todd.

08-09-2010, 10:03 PM	#1
munice regular everyday normal guy Join Date: Aug 2009 Location: SW Ontario, Canada Posts: 125	Quick question about axles n' hubs and 3/4 ton stuff Hey guys and gals, I'm looking at picking up a 78 GMC K20 (for my axle swapping project..) it has a 14bolt FF rear and Dana 44 front, im not sure though if this would still be a full time 4wd truck or not? I have a notion to think that 79 was when they stopped using NP203s but im not sure.. Is it true that one can just put locking hubs on an axle that came out of a fulltime system? (going into my truck with a part time setup) Ive scanned the forum about this too...(todd this is what happened to the frankentruck right?) The other thing I heard was that Dana 44s use the same locking hubs as the GM 10 bolts (which would be great cause i could rob them out of my stock front axle)

08-09-2010, 10:17 PM	#2
Davidmichael Registered User Join Date: Jun 2010 Location: Pittsburgh PA Posts: 686	Re: Quick question about axles n' hubs and 3/4 ton stuff I am not sure about the hub from 3/4 to a 10 bolt, but that's the set up I got in one of my rigs. it's an all time 4x4 but got locking hubs. The drive shaft still spins but with the hubs unlocked the tires do not move. __________________ 86 Suburban 2WD = rolled it and totaled it 83 LWB STD Cab 4x4 = went to the scrapper. Was my baby. 84 Suburban 2WD = stripped it/ scrapped it 81 8 foot bed made into a trailer 86 Suburban going to be made into a trailer 91 Suburban 4x4 = that's my baby 00 S10 Xtreme STD Cab 01 S10 ZR2

08-09-2010, 11:21 PM	#3
87 V20 Scottsdale Registered User Join Date: Jul 2010 Location: Georgetown, KY Posts: 183	Re: Quick question about axles n' hubs and 3/4 ton stuff I thought they were using 10 bolt front ends by '78? If the truck originally had an automatic tranny then it had a full time t-case; and yes you can buy a part-time conversion kit. I'm not sure about the interchangeablility of the D44 and 10 bolt hub locks. I DO know that they were using 10 bolt front ends in '79 because that's where I got the axles for my swap on my V20. __________________ Andrew 1987 V20 Scottsdale 383 TBI, SM465, NP208, 14FF, 4.10 1988 C1500 Scottsdale 305, 700R4, 3.08 1986 K30 Custom Deluxe 6.2, SM465, NP205, 14FF, 4.10

08-10-2010, 12:05 AM	#4
asphaltburner Registered User Join Date: Jul 2008 Location: Ault, Colorado Posts: 862	Re: Quick question about axles n' hubs and 3/4 ton stuff Yo! PM me! FRANKENTRUCK has Dana 44 front with Warn locking hubs. Rear is 5560 lb rated full floating. Both are 4.11:1. FRANKENTRUCK started as a '78 with an NP203, corporate, full-time 4x4, front axle and rear rated at about 4600 lbs. Got my axles from the '73 flatbed and went with an ORD NP205 twin-stick. Glad I saw your post! Todd. __________________ '78 3/4 ton 4x4 custom "Todd-built" FRANKENTRUCK!



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