A friend of mine said he bout some 3/4 ton Chevy runnin gear, 10bolt/14bolt. So I go over to look at it and the rear does not look like a traditional 14bolt. It is 8 lugs, it has 14 bolts but it is not shaped like I know a 14bolt should be. Its not a full floater either. He is not sure what year the stuff is. Any idea what this rear end might be? Thanks.

Sounds like the 9.5 ring gear 14 bolt. A decent axle but not as stong as a full float.

There is the traditional full-float 14 bolt that you are thinking about. Sounds like what your friend has is a semi-float 14 bolt. They are different axles.

alot of the low gvw K20s in the 80's had them. also, i think every K20 burb after 1980 or so had them. not too uncommon. they were also available in the 88+ as 6 lug under the light K2500.

Sounds like the 9.5 ring gear 14 bolt. A decent axle but not as stong as a full float.

I agree, I had one that I pulled from an 84 3/4 Ton. It had the 10 bolt front also. Didn't like it, I was told that it was a C-clipped axle. (you know clip breaks, axle and tire pass you up) Not for sure on that though. I never took it apart.

its basically a 9.5" ring gear 10bolt. eek 14bff is alot stronger, and your tires wont fall off if u can find a way to break a shaft hehe

Yeah that's like the axle I have under my truck. I have actually read that the shafts are slightly stronger the the FF. I'm not trying to get anyone's panties in a bunch, just what I have read. I have personally just beat the piss out of mine and have never had a problem except blowing a pinion bearing one time. I have had the 38" boggers spinning like crazy in mud and grab a hold of an edge and completely stop, never snapped a shaft. Just my .02

had one also ran 38's on double beadlocks. no issues, the axles are quite large and the c clips are also.

14 bolt semi-float
The "small" GM 14-bolt has a 9 1/2-inch ring gear diameter. It was used in the rear of 1964-and-later GM pickups, and in the rear of 1984-91 3/4-ton Suburbans.
http://coloradok5.com/techpics/gmcorp14bolt9.jpg


14 bolt full-float
With a 10 1/2-inch-diameter ring gear, the biggest 14-bolt GM rearend looks much like a Dana 70, and is but a few thousandths of an inch shorter in ring gear diameter. This axle is commonly used with big engines and/or overly large tires. It was used under 1973-87 3/4-tons.

http://coloradok5.com/techpics/gmcorp14bolt10.jpg

I have a 9.5 GM in my YJ. I think it is fine for anything around a 37 inch tire.

Though retained by c-clips, the axles are reasonably strong with 33 splines and a 1.37" dia.

ARB and Lock-Right is about it on the locker options (There may be some more available now).

I just wish that I could find an easy disc brake swap for mine.

congratulations! you are the eleventymillionth person to ask that here!

learn to seach fawkin noob. this has been asked and answered countless times. :rolleyes:


retarded threads like this clutter the board and make it harder to sift through the shit when searching for good useful info on here.



oh and that is the most badass axle ever, buy it for sure! then slap it under your rig and drive off a cliff.

retarded posts like mine clutter the board and make it harder to sift through the shit when searching for good useful info on here.


Fixed that for you.

This threads a month old, it was a done deal until the guy above you dug to add info.

This threads a month old, it was a done deal until the guy above you dug to add info.
Didn't realize there was expiration date on the threads?:confused:

:flipoff2:

Fixed that for you.
wow, congrats on the lamest flame i have seen yet. :rolleyes:

cmon, try a little harder than that!

congratulations! you are the eleventymillionth person to ask that here! learn to seach fawkin noob. this has been asked and answered countless times. :rolleyes: retarded threads like this clutter the board and make it harder to sift through the shit when searching for good useful info on here. oh and that is the most badass axle ever, buy it for sure! then slap it under your rig and drive off a cliff.

The hardcore "Gestapo" strikes again. Bow down to the man who judges all things hardcore. :rolleyes:

wow, congrats on the lamest flame i have seen yet. :rolleyes:

cmon, try a little harder than that!
I thought this was Chevy Tech, not the Adolescent Hazing Forum.

BTW, Chit Chat is a great place to go if you feel you need to exercise some pent up anger.

I thought this was Chevy Tech, not the Adolescent Hazing Forum.

BTW, Chit Chat is a great place to go if you feel you need to exercise some pent up anger.

but you got to admit that this has been covered numerous times and can be found in seconds by hitting the search button. As far as being in the Chevy Tech section, there are basically two 14 bolt axles, glancing at a diagram that you find in a search quickly gives you the answer, not really much tech about it. If he doesnt know the difference between a SF and FF axle perhaps he should be asking in the newbie forum is all Im saying.......

but you got to admit that this has been covered numerous times and can be found in seconds by hitting the search button. As far as being in the Chevy Tech section, there are basically two 14 bolt axles, glancing at a diagram that you find in a search quickly gives you the answer, not really much tech about it. If he doesnt know the difference between a SF and FF axle perhaps he should be asking in the newbie forum is all Im saying.......I will agree. But this isn't even a "Hardcore" forum. Its Chevy Talk for Pete's sake. :)
This hazing stuff is counter productive for us all. When searching for some mundane 4x4 info, I end up having to wade through threads full of this hazing b.s. just to get what I am hunting for. Personally, I would rather search and find pertinent info on 4x4's than read about people bullying others around.

I agree about the hazing getting old but there's not much of it here in the chevy forum. Seems to be mostly in chit chat. I will agree that this is not a hardcore forum but this doesnt seem to be the original goal. Ive copy/pasted from the moderators notes at the top "Hellllooo Chevy People"

"This forum is for hardcore tech questions. This is a four wheel drive forum and we want to see what you've done to make your General Motors 4x4 more capable. I don't want to see questions about where to buy spark plugs or what size tire will fit on a stock truck. If your questions are very basic in nature they will be moved to the Newbie forum. If they are just plain stupid they will be deleted. We aren't here to teach you basic automotive theory, it is assumed that you already have a good handle on that."

My point is.....if he doesnt know the difference between a SF and FF he should be in the newbie forum or at least teach himself some basic axle terminology first by searching and reading.

Its all good :)

I agree about the hazing getting old but there's not much of it here in the chevy forum. Seems to be mostly in chit chat. I will agree that this is not a hardcore forum but this doesnt seem to be the original goal. Ive copy/pasted from the moderators notes at the top "Hellllooo Chevy People"

"This forum is for hardcore tech questions. This is a four wheel drive forum and we want to see what you've done to make your General Motors 4x4 more capable. I don't want to see questions about where to buy spark plugs or what size tire will fit on a stock truck. If your questions are very basic in nature they will be moved to the Newbie forum. If they are just plain stupid they will be deleted. We aren't here to teach you basic automotive theory, it is assumed that you already have a good handle on that."

My point is.....if he doesnt know the difference between a SF and FF he should be in the newbie forum or at least teach himself some basic axle terminology first by searching and reading.

Its all good :)
Touche.

14 bolt semi-float
The "small" GM 14-bolt has a 9 1/2-inch ring gear diameter. It was used in the rear of 1964-and-later GM pickups, and in the rear of 1984-91 3/4-ton Suburbans.
http://coloradok5.com/techpics/gmcorp14bolt9.jpg


14 bolt full-float
With a 10 1/2-inch-diameter ring gear, the biggest 14-bolt GM rearend looks much like a Dana 70, and is but a few thousandths of an inch shorter in ring gear diameter. This axle is commonly used with big engines and/or overly large tires. It was used under 1973-87 3/4-tons.

http://coloradok5.com/techpics/gmcorp14bolt10.jpg


You sure about those years:rolleyes:

You sure about those years:rolleyes:
That was copied from another board, I was just posting it for the pics :D

There is a mistake in years but if you knew, you would have corrected it instead of trying to sound smart :flipoff2:

The 14 bolt FF was used from 73-81 in 3/4 and 1 tons.. In 82 they switched to the semi-float axle.. Your turn :p

You sure about those years:rolleyes:

I do not know the exact origin of the page that crap is excerpted from.... but what I do know is its all over the Internet and there's tons of suckers who take it for fact. :laughing:

That was copied from another board, I was just posting it for the pics :D

There is a mistake in years but if you knew, you would have corrected it instead of trying to sound smart :flipoff2:

The 14 bolt FF was used from 73-81 in 3/4 and 1 tons.. In 82 they switched to the semi-float axle.. Your turn :p

I had an 81 3/4 burb with the semi float rear.and I believe the ff14bolt was used till 99 in 1tons and heavy 3/4s.I have a 94 1ton drw truck with a ff14bolt:flipoff2:
Instead of spreading more mis-information you should have fixed the years since you know what they are??

congratulations! you are the eleventymillionth person to ask that here!

learn to seach fawkin noob. this has been asked and answered countless times. :rolleyes:


retarded threads like this clutter the board and make it harder to sift through the shit when searching for good useful info on here.



oh and that is the most badass axle ever, buy it for sure! then slap it under your rig and drive off a cliff.
Wow, thats is the newest and most orignal insult I have heard yet, calling someone a "fawkin noob". :shaking:
Must make him feel like a salty old sailor or something...
Anyway, if you are going to rant and rave about "fawkin noobs" and "search buttons" and waste your time with a stupid ass chewing, it would seem to me that the more decent thing to do is just answer the guys question and not be such a dickhead.

Wow, thats is the newest and most orignal insult I have heard yet, calling someone a "fawkin noob". :shaking:
Must make him feel like a salty old sailor or something...
Anyway, if you are going to rant and rave about "fawkin noobs" and "search buttons" and waste your time with a stupid ass chewing, it would seem to me that the more decent thing to do is just answer the guys question and not be such a dickhead.
Shut the fuck up you poser faggot. :shaking:

I had an 81 3/4 burb with the semi float rear.and I believe the ff14bolt was used till 99 in 1tons and heavy 3/4s.I have a 94 1ton drw truck with a ff14bolt:flipoff2:
Instead of spreading more mis-information you should have fixed the years since you know what they are??

Just to clear things up a bit, both axles are being used to this day in new gm trucks. The 14ff is used in the 3/4ton hd with the 6.0 option an the new 11.5 inch 14ff is used in the 1-ton dual and single wheeled as well as the 3/4 ton with the 8.1 and the duramax. The 14sf has always been used in the light duty 3/4 in 8 and 6 lug versions such as the 1500HD(8 lug). The six hole version is being used now in the 1/2 ton z-71 with the 6.0 option vortec max. It was also used in the 90's in 1/2 ton 4x4models, even in the 454ss as a five lug version.:)

To further confuse the issue a (not sure of the exact year) the new axles used by GM are made by AAM (same as the new Dodge axles)---completely different axles---- not the same as the GM 9.5" SF14 bolt/or 10.5 FF14bolt. Parts wise they are not interchangable.

Shut the fuck up you poser faggot. :shaking:
ScottFJ40 aka Dickhead #2:flipoff2:

To further confuse the issue a (not sure of the exact year) the new axles used by GM are made by AAM (same as the new Dodge axles)---completely different axles---- not the same as the GM 9.5" SF14 bolt/or 10.5 FF14bolt. Parts wise they are not interchangable.

Every Corporate axle in Gm's (except the dana axles) are made by AAM, 10bolt, 12 bolt, 14 bolt etc. The reason the new front 9.25" isn't interchangeable with the rear 9.25" is that ii is a high pinion like the IFS, same 33 spline axles. If you do some checking, I am almost positive the diff cover on the front dodge axle is the same as the rear chevy axle. Even the 11.5" 14bolt ff is the same in the dodge heavy dutys as the chevy's.

Every Corporate axle in Gm's (except the dana axles) are made by AAM, 10bolt, 12 bolt, 14 bolt etc. The reason the new front 9.25" isn't interchangeable with the rear 9.25" is that ii is a high pinion like the IFS, same 33 spline axles. If you do some checking, I am almost positive the diff cover on the front dodge axle is the same as the rear chevy axle. Even the 11.5" 14bolt ff is the same in the dodge heavy dutys as the chevy's.

The rear axle you are talking about (aka baby 14 bolt, 14 bolt semi-floater) has a 9.5" ring gear, not a 9.25" ring gear. Officially it's the AAM 950. Dodge does have their own Chrysler-sourced, 1/2 ton-rated, 9.25" ring gear, rear axle (inferior design) that has nothing to do with AAM. Both the Chevy IFS AAM 925 and the Dodge Salisbury AAM 925 steering axles use the same ring and pinion (9.25" ring gear). They're both AAM axles. The pumpkins are basically identical. AAM was spun off of GM a couple of years back. All corporate GM axles originated from that group. Jump on the AAM webpage for some more info. The 10.5 FF and 11.5 FF rear axles are used by both Dodge and GM. Chrysler doesn't use the AAM 950 rear axle in it's line-up. GM Corporate Axles (back in the day) = AAM Axles (today)

The rear axle you are talking about (aka baby 14 bolt, 14 bolt semi-floater) has a 9.5" ring gear, not a 9.25" ring gear. Officially it's the AAM 950. Dodge does have their own Chrysler-sourced, 1/2 ton-rated, 9.25" ring gear, rear axle (inferior design) that has nothing to do with AAM. Both the Chevy IFS AAM 925 and the Dodge Salisbury AAM 925 steering axles use the same ring and pinion (9.25" ring gear). They're both AAM axles. The pumpkins are basically identical. AAM was spun off of GM a couple of years back. All corporate GM axles originated from that group. Jump on the AAM webpage for some more info. The 10.5 FF and 11.5 FF rear axles are used by both Dodge and GM. Chrysler doesn't use the AAM 950 rear axle in it's line-up. GM Corporate Axles (back in the day) = AAM Axles (today)

Point taken.:)