International Full Size Jeep Association
Home Forums Reader's Rigs Tech Library Trail Stories FSJ-List
International Full Size Jeep Association  

Go Back   International Full Size Jeep Association > Tire Kickin' > General FSJ Tech

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 04-06-2012, 12:48 PM
altrocker1 altrocker1 is offline
Member
 
Join Date: Dec 30, 2011
Location: iowa
Posts: 145
chevy 14 bolt compatability...

so im not really thinking about doing any axle changing or upgrades anytime soon, but i keep seeing this ad poppin up on craigslist here and i've been told these axles would be bolt in on a j10

http://desmoines.craigslist.org/pts/2928106763.html

is there any truth to this? only reason i am curious is that the 4.10's might be useful to me someday...the price is high to me, but i've seen this listing now for several weeks so perhaps he can be brought down
Reply With Quote
  #2  
Old 04-06-2012, 01:44 PM
Carl78Cher's Avatar
Carl78Cher Carl78Cher is offline
232 I6
 
Join Date: Dec 03, 2006
Location: OK
Posts: 48
Keep in mind van axles are usually wider than the same axle from a 3/4 or 1 ton truck. Also, the semi float 14 bolts are not the same ring and pinion size as the full float axle.
__________________
72 J2000 - under construction

Reply With Quote
  #3  
Old 04-06-2012, 05:10 PM
j20owner's Avatar
j20owner j20owner is offline
Grease Monkey
 
Join Date: Jan 11, 2003
Location: Kansas City, MO
Posts: 355
That is a semi float 14 bolt and isn't worth $50, imo. If I can find my notebook, I could tell you if it would fit with your current springs. I know a truck 14bolt FF axle has the spring pads located the same distance apart as the frame rails on a 79 j20. I also know van axles have the spring pads further apart. 50" center to center sounds about right, but like I said, not worth $350.
__________________
Where is my axle?
79 j20/84 GW GM Hybrid
Reply With Quote
  #4  
Old 04-06-2012, 06:26 PM
altrocker1 altrocker1 is offline
Member
 
Join Date: Dec 30, 2011
Location: iowa
Posts: 145
i was told that the van axles are the only ones that are bolt in, but im probably wrong on that...like i said i have seen it several times on craigslist, but if its not worth my time, then i won't even think about making him an offer
Reply With Quote
  #5  
Old 04-06-2012, 07:01 PM
Blake Blake is offline
Bleedin' Gasoline
 
Join Date: Dec 22, 2005
Location: longmont, colorado
Posts: 2,123
Getting a 14bolt semi float axle is kinda pointless. You still have a HUGE diff to drag the ground, but not the benefit of of the full float bearings/shafts/disc brake availability.

Why does it matter if an axle 'bolts in'? You will most likely need to change the spring perches anyway, even if it's just to get the correct pinion angle.
__________________
Please come on over to http://fsjnetwork.com/forum and have a look.
Reply With Quote
  #6  
Old 04-06-2012, 07:24 PM
v10sport's Avatar
v10sport v10sport is offline
Gear Head
 
Join Date: Mar 23, 2004
Location: Racine,WI
Posts: 498
I believe the purpose of the van 14 bolt is so you don't have to in board the springs on the J trucks. Don't even bother with the semi float 14 bolt
__________________
77 J20
09 Rubicon Unlimited
10 Challenger SRT 8 6 Speed
11 Grand Cherokee Overland

Wisconsin Speed and Performance
Reply With Quote
  #7  
Old 04-06-2012, 11:23 PM
Blake Blake is offline
Bleedin' Gasoline
 
Join Date: Dec 22, 2005
Location: longmont, colorado
Posts: 2,123
Quote:
Originally Posted by v10sport
I believe the purpose of the van 14 bolt is so you don't have to in board the springs on the J trucks. Don't even bother with the semi float 14 bolt

That sounds right.

I in-boarded my 63" chevy springs to make my 14bolt FF fit on the J10.
__________________
Please come on over to http://fsjnetwork.com/forum and have a look.
Reply With Quote
  #8  
Old 04-07-2012, 07:53 AM
csuengr's Avatar
csuengr csuengr is offline
Master Mechanic
 
Join Date: Jan 19, 2011
Location: Loveland, CO
Posts: 748
Semi float 14bolts aren't that bad. Yes the van versions are wider. They do have a higher GAWR (4400-4600lbs) than a Dana 44 (3200lbs) and you are not likely to break the axle shafts unless you do extreme stuff, like Blake. The diff housing on the SF 14 bolt is smaller than a FF 14 bolt due to the smaller ring gear. To bad it's so hard to find one from a H2, and they are so pricey.
__________________
If at first you don't succeed, use a bigger hammer.
Reply With Quote
  #9  
Old 04-09-2012, 05:23 PM
Carnuck's Avatar
Carnuck Carnuck is offline
 
Join Date: Feb 12, 2011
Location: Gold Bar, WA
Posts: 6,419
8 lug 14 bolt semi-float isn't as strong as the 6 lug D44 or M20 in J10s
__________________
Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental.
Reply With Quote
  #10  
Old 04-15-2012, 10:05 AM
csuengr's Avatar
csuengr csuengr is offline
Master Mechanic
 
Join Date: Jan 19, 2011
Location: Loveland, CO
Posts: 748
Let's see, a semi float 14 bolt, either six lug or 8 lug, has 33 spline, 1.5" axle shafts and a 9.5" ring gear. GAWR of 4500lbs. How the hell is that weaker than a Dana 44 or M20.
__________________
If at first you don't succeed, use a bigger hammer.
Reply With Quote
  #11  
Old 04-15-2012, 10:12 AM
Carnuck's Avatar
Carnuck Carnuck is offline
 
Join Date: Feb 12, 2011
Location: Gold Bar, WA
Posts: 6,419
Quote:
Originally Posted by csuengr
Let's see, a semi float 14 bolt, either six lug or 8 lug, has 33 spline, 1.5" axle shafts and a 9.5" ring gear. GAWR of 4500lbs. How the hell is that weaker than a Dana 44 or M20.

That's the full float (2 outer bearings). Semifloat has an axle shaft that necks down and the outer bearing to flange distance is wider than the D44 or M20. I sheared one of those shafts just loading the truck with my camper that I hauled on my '83 J10.
__________________
Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental.
Reply With Quote
  #12  
Old 04-15-2012, 11:28 AM
imiceman44 imiceman44 is offline
Gear Head
 
Join Date: Feb 25, 2006
Location: Sacramento, CA
Posts: 711
Quote:
Originally Posted by Carnuck
That's the full float (2 outer bearings). Semifloat has an axle shaft that necks down and the outer bearing to flange distance is wider than the D44 or M20. I sheared one of those shafts just loading the truck with my camper that I hauled on my '83 J10.
You having sheared one doesn't mean the axles are weaker, numbers speak for themselves, the 14bsf is stronger than both the D44 and the M20, but for the same money or maybe even less sometimes you can have the 14bff so unless it lands in my lap for free I would prefer having the ff over the sf 14b. That being said I am putting a D60 FF rear in my truck because I have it and it's a bolt in in every way.
__________________
IceMan
Reply With Quote
  #13  
Old 04-15-2012, 07:44 PM
j20owner's Avatar
j20owner j20owner is offline
Grease Monkey
 
Join Date: Jan 11, 2003
Location: Kansas City, MO
Posts: 355
Blah, Blah, Blah
__________________
Where is my axle?
79 j20/84 GW GM Hybrid
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Chevy 14 bolt, SRW vs Dually? rocklaurence General FSJ Tech 6 09-05-2011 03:37 PM
D.I.Y Throttle body injection write up (With pics!!!!) and this is no hoax (Part 2) Wagoneerlover Fuel Injection 7 02-20-2008 12:30 PM
Will chevy tcase bolt to my TH400 yellowxj General FSJ Tech 2 10-04-2007 02:37 AM
Change in Bolt sizes, from '78 to '79=frustration!!! and warning. Bob Barry General FSJ Tech 3 07-23-2001 07:26 AM


All times are GMT -6. The time now is 07:44 AM.


Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
corner corner