![]() |
![]() |
#1 |
Registered User
Join Date: May 2012
Location: 90045 cali
Posts: 567
|
14 bolt???
looking at a 14 bolt rear end,and need to know the difference in if its a a "full floater,and a "semi floater".it is on a 78 cc single wheel 2wd.looking to use this on a 1980 k10 4wd that will have a 454/sm465 with everything hydraulic,and a .is the "semi floater"even worth dragging home?
|
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Feb 2014
Location: virginia
Posts: 59
|
Re: 14 bolt???
Atleast from what I know difference in a semi and a full floater is the huge hub sticking out the center of the wheel and the shape of the diff housing just do a google images search. And yes the semi is worth fooling with its still a stong axle
__________________
94 Silverado 1500 ext. Cab short bed 350 nv4500 (factory) ![]() 78 K20 350 (soon to be 400sbc if I can find one) sm465 205 dana44 14bff 6in lift on 37" militarys |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Jun 2012
Location: Meeker, ok
Posts: 146
|
Re: 14 bolt???
__________________
Trevor 74 C20...work in progress. 04 Saturn Ion...Daily Driver |
![]() |
![]() |
![]() |
#4 |
Senior Member
Join Date: Aug 2004
Location: Everett, WA
Posts: 2,316
|
Re: 14 bolt???
Are the brakes and what not the same on a SF vs. FF?
__________________
2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold) |
![]() |
![]() |
![]() |
#5 |
Registered User
![]() Join Date: Jul 2014
Location: Winston-Salem, NC
Posts: 561
|
Re: 14 bolt???
|
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Dec 2012
Location: Temple City
Posts: 3,586
|
Re: 14 bolt???
If you have a 14sf like a guy above sad it is a very capabke axle. It is practically what the new trucks use to tow 11000 pounds. Plus it is 1/2 the weight of FF. Which is why I am running one on my K20.
I say it is worth dragging home. If you have a K10 it maybe the 6 lug version which is a very good axle for all but the serious off road rigs. If you wanna bounce off rocks and the rev limiter it won't last, or run 44 mud grapplers. |
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,717
|
Re: 14 bolt???
Easiest thing is to look at the wheel hub as mentioned above. But if it has bolt on wheels with centers that come from the back, some other things to look for: The full float 14 bolt has a bolt in pinion support. The full float has an odd angular shaped cover.
Semi-float did not show up until early 80's. I don't think any crew cabs ever had the semi-float. Semi-float cover is mostly round. Center of axles is flush with the wheel face or slightly inside.
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Jan 2014
Location: Indpls. , IN
Posts: 795
|
Re: 14 bolt???
Semi-floater was used on the 454 SS trucks also. It would be a great upgrade for a half-ton. 3/4 ton axle which came in mostly 8 bolt and some 6 bolt versions.
__________________
Tim K. 84 K30 srw Silverado 454 auto 85 C20 350 C6P auto flatbed 94 K1500 lifted shortbed 350 4 bbl NV4500 |
![]() |
![]() |
![]() |
#9 |
Registered User
Join Date: Jan 2014
Location: Indpls. , IN
Posts: 795
|
Re: 14 bolt???
No , the smaller full floater brakes are a little bigger and the upgrade size is alot bigger. ( I know , sounds precise
![]()
__________________
Tim K. 84 K30 srw Silverado 454 auto 85 C20 350 C6P auto flatbed 94 K1500 lifted shortbed 350 4 bbl NV4500 |
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
|
Re: 14 bolt???
What are your plans for the truck,Are you going to lift it and run bigger tires?If the semi float was going in a stockish truck it would be ok.If you want a lift and 38s i would go for the 14 bolt.Are you going to upgrade the front to a dana 60 as well?
|
![]() |
![]() |
![]() |
#11 |
Registered User
Join Date: Jun 2009
Location: Oroville, CA
Posts: 4,827
|
Re: 14 bolt???
I had a semi float axle snap off on my 87 K 20 (V 20) and the wheel passed me up and it almost hit oncoming traffic. Since then, I have always run full floaters and haul the semi float for scrap metal. But I work my trucks hard.
|
![]() |
![]() |
![]() |
#12 |
Registered User
Join Date: May 2012
Location: 90045 cali
Posts: 567
|
Re: 14 bolt???
you guys are the bitness!!! thanks for the schooling!!! looks like the rear end is a full floater.now i have a choice of trucks that im building to install this rear end in,and would like your guys educated/valued oppinions as to what truck the full floater would do/suit better? i can either put it in my 80 k10(1/2 ton),that is lifted 4" with 33's,454 and sm465(that is used solely for hauling wood,and the occasional mud pit playng
![]() |
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Jan 2014
Location: Indpls. , IN
Posts: 795
|
Re: 14 bolt???
The K10 , but the 10 bolt in the Blazer could use a support cover to brace the carrier bearing caps.
$.02
__________________
Tim K. 84 K30 srw Silverado 454 auto 85 C20 350 C6P auto flatbed 94 K1500 lifted shortbed 350 4 bbl NV4500 |
![]() |
![]() |
![]() |
#14 |
Registered User
Join Date: Nov 2014
Location: Alameda, CA
Posts: 877
|
Re: 14 bolt???
The full floaters have serious brakes too, the drums weigh something like 60-70lb each.
__________________
1973 C20, 350/350 |
![]() |
![]() |
![]() |
#15 |
Registered User
Join Date: May 2012
Location: 90045 cali
Posts: 567
|
Re: 14 bolt???
yeah one of the reasons im wanting to swap over the 14 bolt is for the convienience of the rear disc brake conversion brackets avail from various vendors! so those ugly overweight drums will be gone! as far as my blazer is concerned,it currently has a 12 bolt 6-lug 4wd axle on it as i converted it from 4wd-to-2wd,along with modding it to a full vert using a 74 donor
![]() ![]() |
![]() |
![]() |
![]() |
#16 | |
Senior Member
Join Date: Aug 2004
Location: Everett, WA
Posts: 2,316
|
Re: 14 bolt???
Quote:
It was an ex-government truck though, so they might have requested it that way?
__________________
2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold) |
|
![]() |
![]() |
![]() |
#17 |
Registered User
Join Date: Dec 2013
Location: Marietta, OK
Posts: 277
|
Re: 14 bolt???
Since you're ditching the drums in favor for disks, I'd put in in the truck that'll see mud. I was tired of breaking axles from off road abuse and swapped in a disk brake 14bff. Never had another issue even in stock form. Loved that axle and if I ever build another off road rig it'll have one in it.
Last edited by Kaysen; 01-28-2015 at 08:42 PM. Reason: Fat fingers |
![]() |
![]() |
![]() |
#18 |
Registered User
Join Date: Aug 2013
Location: So*Cal - Riverside, CA
Posts: 85
|
Re: 14 bolt???
All the 14 bolt knowledge! It's amazing... Now I can tell difference...
So what's the difference between 3/4 ton and 1 ton 14 bolt? Is it SF or ff, brakes, ring and pinon? |
![]() |
![]() |
![]() |
#19 | |
Registered User
Join Date: Jan 2014
Location: Indpls. , IN
Posts: 795
|
Re: 14 bolt???
Quote:
Brakes... (1984 sizes) ; 11" X 2.75" sf. 13" X 2.5", 13" X 3.5" ff. FF was optional on a 3/4 ton, mandatory with some packages.
__________________
Tim K. 84 K30 srw Silverado 454 auto 85 C20 350 C6P auto flatbed 94 K1500 lifted shortbed 350 4 bbl NV4500 Last edited by 68post; 01-29-2015 at 01:34 AM. Reason: add " |
|
![]() |
![]() |
![]() |
#20 | |
Registered User
Join Date: Dec 2010
Location: Pittsburgh, PA
Posts: 1,009
|
Re: 14 bolt???
Quote:
http://www.pirate4x4.com/tech/billavista/14b_bible/
__________________
Steve Member of the Foot Pedal Club '83 Chevy K20: 6" Rough Country, 3" Performance Accessories BL, Bushwacker Cutouts, 38x15.50 Mickey Thompson Baja Claws, 350 HP 350 crate engine from Jegs, Turbo 400 ![]() |
|
![]() |
![]() |
![]() |
#21 |
Registered User
Join Date: Dec 2007
Location: Kimberley, BC, Canada
Posts: 799
|
Re: 14 bolt???
Steve, you beat me to it. I was going to say exactly the same thing. Measure the distance between the centre of the spring perches to tell the 3/4 apart from the 1 ton.
Greg
__________________
Greg 64 GMC Suburban - 283, NV3500, 14 bolt 77 C10 swb - 292, SM465, 12 bolt |
![]() |
![]() |
![]() |
#22 |
Registered User
Join Date: May 2012
Location: 90045 cali
Posts: 567
|
Re: 14 bolt???
turns out the rearend is a d60,so that would be a 1-ton ff yes?
|
![]() |
![]() |
![]() |
#23 |
Registered User
Join Date: May 2012
Location: 90045 cali
Posts: 567
|
Re: 14 bolt???
also looking like ill have to get the springs perches as well(in order to mount the ff to a 1/2 ton frame)?
|
![]() |
![]() |
![]() |
#24 | |
Registered User
Join Date: Dec 2010
Location: Pittsburgh, PA
Posts: 1,009
|
Re: 14 bolt???
Quote:
__________________
Steve Member of the Foot Pedal Club '83 Chevy K20: 6" Rough Country, 3" Performance Accessories BL, Bushwacker Cutouts, 38x15.50 Mickey Thompson Baja Claws, 350 HP 350 crate engine from Jegs, Turbo 400 ![]() |
|
![]() |
![]() |
![]() |
#25 |
Registered User
Join Date: Nov 2013
Location: chesapeake,va
Posts: 1
|
Re: 14 bolt???
The answer to your question is simple. A full floater has axle shafts that are bolted to the drums. The semi floating ones are held in with c-clips inside the differential case. Look at the picture in post #3, the bottom one has axle shaft that bolts to the drum. The one above it doesn't.
|
![]() |
![]() |
![]() |
Bookmarks |
|
|