79 gmc c/k25 front end - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TNBogger · 02-03-2005, 12:12 PM

I am just getting in to 4-wheeling, and I have bought a truck. It is a 1979 gmc 2500. I want to know what my front end is, and I would like to know my rear end. I have been told that it is maybe Dana 44, but I don't know. Thanks for your help just trying to get started. Also if anyone has any good ideas for this truck I would appreciate them too.Thanks, Matthew

**Captkaos** · 02-03-2005, 12:34 PM

Front is either a D44 or a 10bolt as 79 was the transistion period from the D44 to 10B. Rear axle will be a 14FF. This is assuming everything is still factory. D44 and 10B are nearly identical.

784X4GUY · 02-03-2005, 12:49 PM

The diff covers look totally different...At least thats my opinion...Later Mike

TNBogger · 02-03-2005, 03:30 PM

Quote:

Originally Posted by 784X4GUY

The diff covers look totally different...At least thats my opinion...Later Mike

So how will I know which one it is. Is there a site that will tell me or any other way of finding out. Sorry I am new to this and trying to learn. Also I am considering a lift, maybe 4 inches or so. I saw the picture of your truck how many do you have under it,or is there something you recommend.

TNBogger · 02-03-2005, 03:32 PM

Quote:

Originally Posted by Captkaos

Front is either a D44 or a 10bolt as 79 was the transistion period from the D44 to 10B. Rear axle will be a 14FF. This is assuming everything is still factory. D44 and 10B are nearly identical.

So what does that mean if I have a 14 full float rear end. Just trying to learn a little

1972 · 02-03-2005, 05:52 PM

A full floating axle has a hub and two bearings on a spindle per side much like the front axle and the drive axle bolts into the hub. A semi float axle has only 1 bearing per side and the axle shaft rides on this bearing and moves the vehicle. The benefit of the FF design is that the hub holds the weight and the axle shaft only moves the vehicle. The SF design means the axle shaft suports the weight of the vehicle and moves it also. The "14 bolt" refers to the size, and it is a very stout axle.

Here is a pic of a Dana 44, look at the cover for comparison to what you have. The D44 cover is flat on the left and right edges, the 10 bolt has a more round cover.

02-03-2005, 12:12 PM	#1
TNBogger Registered User Join Date: Feb 2005 Location: Lebanon TN Posts: 14	79 gmc c/k25 front end I am just getting in to 4-wheeling, and I have bought a truck. It is a 1979 gmc 2500. I want to know what my front end is, and I would like to know my rear end. I have been told that it is maybe Dana 44, but I don't know. Thanks for your help just trying to get started. Also if anyone has any good ideas for this truck I would appreciate them too.Thanks, Matthew

02-03-2005, 12:34 PM	#2
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Front is either a D44 or a 10bolt as 79 was the transistion period from the D44 to 10B. Rear axle will be a 14FF. This is assuming everything is still factory. D44 and 10B are nearly identical. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

02-03-2005, 12:49 PM	#3
784X4GUY Did someone say MUD? Join Date: Aug 2003 Location: Pullman,WA Posts: 1,089	The diff covers look totally different...At least thats my opinion...Later Mike __________________ Im in the market guys...so keep ya eyes peeled -------------------- Mini trucks are for guys who cant get it up!

02-03-2005, 05:52 PM	#6
1972 Majician Join Date: Nov 2004 Location: In the Middle Posts: 329	A full floating axle has a hub and two bearings on a spindle per side much like the front axle and the drive axle bolts into the hub. A semi float axle has only 1 bearing per side and the axle shaft rides on this bearing and moves the vehicle. The benefit of the FF design is that the hub holds the weight and the axle shaft only moves the vehicle. The SF design means the axle shaft suports the weight of the vehicle and moves it also. The "14 bolt" refers to the size, and it is a very stout axle. Here is a pic of a Dana 44, look at the cover for comparison to what you have. The D44 cover is flat on the left and right edges, the 10 bolt has a more round cover.



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