14 bolt

Baker

Baker

Well-Known Member
Joined
Mar 25, 2010
Location
Suffolk, VA
14b.jpg
is this 14 bolt a semi floater or a full floater? whats the difference? which is better? still kind of a newb when it comes to axles.
 
that should be a full floater. the wonderful thing about a full floater is you can change the axle shaft without removing tire or brakes. the semi floater cover is shaped more like a football. ff is 10.5" gear and semi floater is 9.5" gear.:beer:
 
This is on a k5 will a 12 bolt be a bolt in swap as long as gears match? I wanna snag the 14 bolt for my Cj and throw a 12 bolt in the k5 bc I'm selling it anyways.
 
12-bolt should be a swap in if the Blazer is 91 or older. I cannot speak directly to the driveshaft being exactly the right length but I cannot imagine it being much different than the 10-bolt. I have a 12-bolt under my '69 but it came stock that way!
 
toyotaman84 said:
that should be a full floater. the wonderful thing about a full floater is you can change the axle shaft without removing tire or brakes. the semi floater cover is shaped more like a football. ff is 10.5" gear and semi floater is 9.5" gear.:beer:
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Also the ring gear relief is on the other side for the semi-float.

The 12 bolt should swap in but i'm sure the u-joints are different.
 
did 12 bolts ever come stock with 4.56 gears? i found one for 100 bucks but it has like 3.52 gears i'd rather find one that i dont have to mess with just swap it in and be done with it. if i have to change u-joints thats not an issue but i'd rather not re gear something im not gonna use at all. it just sits here thats why i need to sell it
 
I am not the authority but in the 1/2 ton stuff that they were put under I think you could go as high as 4.10. The 3/4 and 1T trucks had Eatons (HO52/72) and Dana (60) rear axles under then and 4.56 was much more common. My Blazer has 3.73s and the automatics of the day commonly came with 3.07s.
 
OnlyOneDR said:
I am not the authority but in the 1/2 ton stuff that they were put under I think you could go as high as 4.10. The 3/4 and 1T trucks had Eatons (HO52/72) and Dana (60) rear axles under then and 4.56 was much more common. My Blazer has 3.73s and the automatics of the day commonly came with 3.07s.
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The eatons before 72. The 3/4 to and 1 ton after 72 both came with a 14 bolt there were a few exceptions but I have honestly never seen a dana 60 stock as a rear in a chevy.

To the op why not the pick up another 14 bolt, switching from 14b to 12b will cause you to have a mismatch in lug patterns. 14b are common on here just check the classifieds.
 
The problem I'm running into is finding one close all the ones I found are like 6-8 hours away. That's what I originally planned to do but I'm having a hard time finding one and I'm in the military so I can only travel so far from base
 
Redneck92 said:
The eatons before 72. The 3/4 to and 1 ton after 72 both came with a 14 bolt there were a few exceptions but I have honestly never seen a dana 60 stock as a rear in a chevy.
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Splitting hairs, Eatons *through* 72. I see the 67-72 boards from because of my Blazer and there are people with 60's under some 2wds, although I may be confusing the GMCs. To me they are all GM. Seems the 4x4s all have Eatons.

I kind of assumed the OP was moving up from 10-bolts so a 12-bolt is a direct swap with no wheel change. If I was going through the trouble I would do a 14-bolt as well, although the 12-bolt lives pretty comfortably behind some high Hp engines in the street rod scene. My brother puts down just over 600Hp to his '72 Chevelle 12-bolt and it hasn't grenaded yet.
 
OnlyOneDR said:
Splitting hairs, Eatons *through* 72. I see the 67-72 boards from because of my Blazer and there are people with 60's under some 2wds, although I may be confusing the GMCs. To me they are all GM. Seems the 4x4s all have Eatons.

I kind of assumed the OP was moving up from 10-bolts so a 12-bolt is a direct swap with no wheel change. If I was going through the trouble I would do a 14-bolt as well, although the 12-bolt lives pretty comfortably behind some high Hp engines in the street rod scene. My brother puts down just over 600Hp to his '72 Chevelle 12-bolt and it hasn't grenaded yet.
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It needs to get traction to break or a good size rock.
 
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