how to tell what year front axle? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

KD · 09-03-2002, 09:45 PM

I know that I dont have the front axle that came with the truck as I have a '67 4x4 ,the axle in there now has disc brakes and when I put the front lift in the u bolts didnt fit,they were 3 inch and the axle needed 3 1/4 . I was cleaning up the cv joint and noticed spicer written on it.Just curious as how to tell for sure.KD

palallin · 09-03-2002, 11:52 PM

Are the knuckles closed (enclosed in a globe) or open (with the u-joint visible inside)?

JJk10 · 09-04-2002, 12:52 AM

I might be wrong in thinking this but if I remeber some of the U-bolts on the front axle are diffent sizes depending on where on the axle they are.. my dana 44 has a disc brake conversion and is a 1970, it has smaller u-joints then the later one if I was to use the later shafts...I am sure there's a difference in the diameter of the axle tube itself, with the earlier design being smaller. I think I had to reuse the u-bolts I had made for the front the previous spring to get my lift to work. hope this helps, or atleast helps somone else point you in the right direction

KD · 09-04-2002, 07:19 AM

the knuckles are open as you describe them.

09-03-2002, 09:45 PM	#1
KD Truck Nut Join Date: Mar 2000 Location: Big Lake,MN,US Posts: 134	how to tell what year front axle? I know that I dont have the front axle that came with the truck as I have a '67 4x4 ,the axle in there now has disc brakes and when I put the front lift in the u bolts didnt fit,they were 3 inch and the axle needed 3 1/4 . I was cleaning up the cv joint and noticed spicer written on it.Just curious as how to tell for sure.KD __________________ '70 3/4 manual w/350 4.56's .Doing a ground up on a '67 4x4 4"lift.

09-03-2002, 11:52 PM	#2
palallin Registered User Join Date: Jul 2002 Location: St. James, MO Posts: 1,238	Are the knuckles closed (enclosed in a globe) or open (with the u-joint visible inside)? __________________ '69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt.

09-04-2002, 12:52 AM	#3
JJk10 Registered User Join Date: Jul 2000 Location: grand bay, new brunswick , Canada Posts: 648	chevk10 I might be wrong in thinking this but if I remeber some of the U-bolts on the front axle are diffent sizes depending on where on the axle they are.. my dana 44 has a disc brake conversion and is a 1970, it has smaller u-joints then the later one if I was to use the later shafts...I am sure there's a difference in the diameter of the axle tube itself, with the earlier design being smaller. I think I had to reuse the u-bolts I had made for the front the previous spring to get my lift to work. hope this helps, or atleast helps somone else point you in the right direction __________________ Displaced Canadian in Monterey California 1970 K10, 350 HEI, 4spd. 3.73's NP205 33"BFG Mud Terrains Edelbrock Intake and carb. 12 bolt rear,dana 44 front with disk brakes

09-04-2002, 07:19 AM	#4
KD Truck Nut Join Date: Mar 2000 Location: Big Lake,MN,US Posts: 134	What year front axle the knuckles are open as you describe them. __________________ '70 3/4 manual w/350 4.56's .Doing a ground up on a '67 4x4 4"lift.

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