14 Bolt SF

[Monster]

My 10 Bolt with 4.56 gears has broken 4 times on me. I dont off road so I thought it would be ok with 4.56 gears guess not? Now I have a 10 bolt thats no good that I put 0ver 2000 bucks into it.

So I bought 14bolt SF and front 10bolt 8 Lug 4.10 gears for 500 dollars. It came from a 85 K20.
I have a 86 K5----> 4"suspension,2"BodyLift,35Bfg,700-R4,StageoneShiftKit,300hp.

My question is Will these bolt on and can I use the stock driveshaft or will I need a different one.????



/forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif

 

[rick88blaze]

the front you shouldn't have a problem with, you can even use your old calipers. the rear will pretty much be a straight bolt in also. you will need a conversion u-joint to go for the 10 bolt driveshaft yoke to the 14 bsf. the part # should be #447. This should be a NAPA part number. I'm not sure about your e-brake cables. they might be different. /forums/images/graemlins/thumb.gif /forums/images/graemlins/thumb.gif

Rick

 

[83ZZ502_Jimmy]

It will bolt in just fine. You will need the U-bolts and spring plates from the K20 for the rear axle. The Napa 447 or Neapco 2-1153 will be needed to convert your rear driveline. the p-brake cables that you have now will bolt up fine.

The front will will be a bolt-in.

Hope it helps,
John

 

[zcarczar]

You could also buy a set of 6 lug axle shafts and drums for the 14 bolt SF and run the same wheels you have now. If you have a local machine shop you can see if they can redrill your current shafts then all you would have to do is swap on the 6 lug drums.

 

[75-K5]

[ QUOTE ]
You could also buy a set of 6 lug axle shafts and drums for the 14 bolt FF and run the same wheels you have now

[/ QUOTE ]

Is this what you meant? /forums/images/graemlins/thumb.gif

 

[SUBFAN]

No....

 

[Monster]

Thanks for the info guys.

Did not think about changing the axls to 6 lug. Even if I did that my rims would be to small for the drums.

Time for NEW rims and tires.!!! /forums/images/graemlins/laugh.gif /forums/images/graemlins/k5.gif

 

[rjfguitar]

[ QUOTE ]
Thanks for the info guys.

. Even if I did that my rims would be to small for the drums.

Time for NEW rims and tires.!!! /forums/images/graemlins/laugh.gif /forums/images/graemlins/k5.gif

[/ QUOTE ]
No they wouldn't.

 

[75-K5]

[ QUOTE ]
No....

[/ QUOTE ]

Oh, I thought 14bsf's were 6 lug...my bad /forums/images/graemlins/ignore.gif /forums/images/graemlins/rotfl.gif

 

[rjfguitar]

[ QUOTE ]
[ QUOTE ]
No....

[/ QUOTE ]

Oh, I thought 14bsf's were 6 lug...my bad /forums/images/graemlins/ignore.gif /forums/images/graemlins/rotfl.gif

[/ QUOTE ]
They came in both 6 and 8 lug versions... obviously the 6 lug version being more desirable.

 

[R72K5]

6 lug ones started around '88 or '90 or somewhere in there,

 

[rjfguitar]

[ QUOTE ]
6 lug ones started around '88 or '90 or somewhere in there,

[/ QUOTE ]
88'

 

[R72K5]

[ QUOTE ]
[ QUOTE ]
6 lug ones started around '88 or '90 or somewhere in there,

[/ QUOTE ]
88'

[/ QUOTE ]

good deal /forums/images/graemlins/laugh.gif same year as the axle shafts on at least 10 bolts increased to 30 spline i believe, or was it 31 ?

 

[rjfguitar]

I believe they are 33 spline.

 

[89GMCSuburban]

10 bolts went from 28 to 30 starting in 88 in sparse numbers and all 89's should have them.
14 SF have always been 33 spline

 

[R72K5]

and i take it that FF stayed the same always too even after 87/88, what about 60s fronts and rears ? i know 60 rear changed splines a few times, and for different makes too

 

[89GMCSuburban]

FF 14 bolt has always been 30 spline.
Dana 60's have many different spline counts and shaft thicknesses, some require crush sleeves on the pinion and some don't. D60's are a mixed bag, make to sure to use the Material number off of it to get parts.