1st post. Round eye square guy in NE Texas.

[Mujiir]

What part of N.E. Texas are you in?

A little NE of Mount Pleasant TX.

 

[Mujiir]

Get in there and clean up around the pumpkins you can Identify exactly what you have so you can get the right parts you need.

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Not sure if it's 44 8, or 44 81, 44 B... 8 lug HD with 6 lug spindles...? Got a guess?

 

[hoagster]

Dana 44 6 lug for a 1/2 ton is all I get so far. Go to Denny's you can order any parts you need from them. https://www.dennysdriveshaft.com/c718_dana_44_front_chevy.html

 

[idahovette]

All the Dennys around me are closed?????......lol

 

[Mujiir]

More information... Dana 44-8F (BOM# on the tube) -> 610079-7 3 12 9 7BF And a ratio tag for 3.73 to 1 gearing? I don't know what the 41-11 means either.

I found this on the online AI site:

• The axle Bill of Materials (BOM) number 610079-7 corresponds to a 1978–1979 GM Dana 44 front axle with a 3.07 gear ratio. It is specifically found in 1/2-ton 4x4 trucks, which includes your 1979 GMC Royal Sierra.
  
  Axle specifications
  • BOM Number: 610079-7
  • Axle Type:
    Dana 44 front axle
  • Vehicle Application: 1978–1979 GM 1/2-ton 4x4 trucks, including the 1979 GMC Royal Sierra
  • Knuckle Style: Open knuckle
  • Differential: Standard open carrier (for 3.07 ratio)
  • Gear Ratio: 3.07:1
  • Axle Shaft Spline Count: 30-spline inner axle shafts
  • Wheel Bolt Pattern: 6-lug, 5.5-inch pattern
  • Brakes: Standard disc brakes
• 
  
  
  Important notes on decoding
  The full axle tag provides additional details:
  • 3 12 9 7BF: This is a production code. The "3" may indicate a production line or variation. The "12 9 7BF" generally refers to the date of manufacture. It decodes to the 129th day of 1977.
  • Reading the BOM number: The Bill of Materials (BOM) number is a critical code used by Dana to identify the exact parts used in an axle assembly, including the gear ratio, type of differential, and component parts. Traditional BOMs start with a "60" or "61", even if those digits are sometimes dropped on the tag itself. The "610079-7" clearly identifies the axle.
• 
  
  
  
  Not sure about the 3.07 ratio. Other AI searches said this axle was off a 3/4-ton truck, and that search had the correct 3.73 ratio shown on my ratio tag... It seems that even definitive answers are subject to question.

 

[idahovette]

41 divided by 11 = 3.73............41ring gear teeth.......11 pinion gear teeth

 

[Mr Clean]

A little NE of Mount Pleasant TX.

Your not too far from me, I'm south of Longview

 

[hoagster]

Good job decoding your axle, I'm impressed you got farther than I did on mine! Like I said Denny's is a good site because they the exploded parts diagram. You can use it for a reference. All the parts are available at many vendors.

 

[Mujiir]

Your not too far from me, I'm south of Longview

Are you a member of Lone Star Squares East Tx? I am there also.

 

[Mr Clean]

Are you a member of Lone Star Squares East Tx? I am there also.

Never heard of them

 

[Mujiir]

Never heard of them

It's a FaceBook page. I'm not a fan of FB, but there are some interesting groups there.

 

[bucket]

Not sure about the 3.07 ratio. Other AI searches said this axle was off a 3/4-ton truck, and that search had the correct 3.73 ratio shown on my ratio tag... It seems that even definitive answers are subject to question.

I would never call AI searches a "definitive answer".

If you pull that cover, I'll bet you find a 3.73 gearset in there, just like the tag says. But if you do, be sure to put that ratio tag back on there because in my experience, most people don't.

 

[CheemsK1500]

Welcome. That’s a beautiful truck. Shamrock green is best green.

 

[Mujiir]

Now we went and did it...

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[hoagster]

No turning back now! You might as well go the whole way like I did!! Just kidding it's a lot of work putting it back together believe me.