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Mmmmm, beef!

txcol_sanders said:
How far off were the spring perches? I bought one off an '88 3/4 ton 2WD a couple weeks ago and havent had time to really dig into it yet. I didnt even bother measuring the spring perches, as Petersons said it was a direct bolt in. Guess I will have to get them moved. I did buy new bearings and all new brake components. Hope to start the swap this weekend. I hope that it has the same gears as my old 10 bolt. Will check this weekend.
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They are way off. Remember, the swap Petersons did was into a NBS Tahoe. That's why it was a direct bolt-in for them. Don't expect it to be a bolt in to your K5 or OBS truck. Fortunately, moving the perches and shock mounts isn't too bad... assuming you have the tools to get it done :D
 
Chevy305 said:
Awsome!! That is exactly what i plan to do with my truck! I broke my 10bolt a few weeks ago and have been looking for a 14bSF to upgrade to. I plan on trying to find one from a 81-87 3/4ton truck so the spring perches and shock mounts line up. But I don't know about you but a 14bSF from a 81-87 3/4ton with a 4.10 ratio and 6 lug is the holy grail of axels. Apparently 6 lug 14bSF didn't come around until the new body style, right?


The 14bSF has a 9.5 inch ring gear right?
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i believe you are correct bout the 6luggers not coming til the newer body ifs trucks. yep they are 9.5 ring gear.

why not just get an 8lug 14bsf, sell the shafts and brakes and swap in 6lug shafts? i guess at that point it would jus be easier to move mounts.
 
muddybuddy said:
i believe you are correct bout the 6luggers not coming til the newer body ifs trucks. yep they are 9.5 ring gear.

why not just get an 8lug 14bsf, sell the shafts and brakes and swap in 6lug shafts? i guess at that point it would jus be easier to move mounts.
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True...

I might have a line on a FREE 14bSF! :deal:

Did I mention that the ring and pinion was blown? :o
 
Looks good! Maybe I can use this thread to convince a buddy to go ths route ;)

How do the tires sit in the fenderwells? I'm curious because I know there's at least 3 different widths of 6-lug 14bSF.
 
u2slow said:
Looks good! Maybe I can use this thread to convince a buddy to go ths route ;)

How do the tires sit in the fenderwells? I'm curious because I know there's at least 3 different widths of 6-lug 14bSF.
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The van axle would be too narrow. The 4x4 axle would be the same width (or possibly a tad wider) than the front. I got a 2WD axle, and it is about an inch wider than the stock 10b, so the tires sit fine in the wheel wells - better than they did with the 10b actually.
 
about an inch wider than the stock 10b, so the tires sit fine in the wheel wells - better than they did with the 10b actually.
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Good. I was afraid the 2wd might be verging on too narrow. I'm quite sure the van version is the widest of the 3.
 
u2slow said:
Good. I was afraid the 2wd might be verging on too narrow. I'm quite sure the van version is the widest of the 3.
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Yup, your right. My bad :doah: The van axle should be in the neighborhood of 70" WMS-WMS.

Also, something I entirely forgot about is that the hub diameter on the NBS axles are smaller than on the older stuff. This means that the wheels will no longer be hub-centric. I can think of three solutions to this. The first is to not worry about it - most guys running aftermarket wheels are lug-centric because the wheels have really big center holes to accomodate a variety of vehicles, and they seem to be fine. The second is to make a locating ring, with an ID the same as NBS wheels and an OD the same as OBS axle hubs. In order to keep it from falling out you can drill a 3 hole pattern for, say, 10-32 bolts and drill and tap a matching pattern in the drums for 10-32 threads. Then use 10-32 bolts to attach the ring to the drum, and grind the threads flush with the drum on the backside. The third option is to make 1" thick wheel spacers with a NBS diameter center and an OBS locating hub. This way you get your axle to the same overall width as the front as well as solving the issue of differing hub diameters. Since I like the width of the axle as is, I'm going to go with option two. I have never been comfortable running wheels lug-centric :D
 
Updated I guess . Gregs been out with me a few times wheeling it , and I don't think the bolts on the axle plates mind rocks at all :thumb:
 
Nice job Max. I learn something new everyday. Awsome. Gonna use your idea for the bolts my my 14bff.:waytogo:
Hoby
 
Found this thread using the search :waytogo:. Thanks Max for the useful info. I was also curious if you used the stock K5 ebrake cables with this setup or something else.
 
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