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How do you tell a Dana 36 , from a Dana 44

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Old 04-10-2018, 10:30 AM
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Scarab1988
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Default How do you tell a Dana 36 , from a Dana 44

Good morning Forum
How do you tell a Dana 36, from a Dana 44 ?
When I used to build '69 Camaros it was easy to tell a 10 bolt, from a 12 bolt, count the rear cover bolts.
Now that I have my first Corvette ('96 LT-1), I'd like to know what I have.
As always, thank you all in advance for tech advise.
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Old 04-10-2018, 11:00 AM
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383vett
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NOTICE THE LOCATION OF THE TOP CENTER BOLT HOLE ON THE DANA 36 THATS NOT ON THE DANA 44 REAR, thats a QUICK WAY TO TELL THEM APART
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Old 04-10-2018, 12:27 PM
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thurman_merman
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First image from a Google search. Like 383 said, 36 has a single bolt top center, 44 has 2 bolts.
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Old 04-10-2018, 10:16 PM
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NASCAR314
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pic of a DANA 36




DANA 36

pic of DANA 44




DANA 44


Both from behind:




DANA 44 on left, DANA 36 on right
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Old 04-11-2018, 06:32 PM
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Scarab1988
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Default How to tell a Dana 36 from a Dana 44

Awesome info with pics gang. Thank you !!!
Anyone know the RPO code for the Dana 44 ?
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Old 04-15-2018, 03:02 PM
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Drew95
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Originally Posted by Scarab1988 View Post
Awesome info with pics gang. Thank you !!!
Anyone know the RPO code for the Dana 44 ?
So, there isn't really an RPO that flat out distinguishes Dana 36 from 44 (best I know, anyway). But here are the rears that the factory provided based on Gear RPOs:

---
G44 - 3.07 Rear Axle Ratio - D36, optional; D44, standard, pre-1992.
G92 - Performance Axle Ratio - Shows performance axle selected.
GHO - 3.54 axle ratio - D44 only.
GM1 - 2.59 Rear Axle Ratio - D36 only.
GM3 - 3.45 Rear Axle Ratio - D44 only.
GU2 - 2.73 Rear Axle Ratio - D36 only.
---
For reference, here's a shot of my SPI card on my 95:

https://cloud.amp-hosting.com/index....pfNcb9gl13yp5V

So, D44 with 3.45 (from factory).

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Old 04-15-2018, 08:52 PM
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ihatebarkingdogs
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Originally Posted by Scarab1988 View Post
Anyone know the RPO code for the Dana 44 ?
As stated above, there are no RPO's for the axle itself. But there are RPO's that will tell you what differential is in the car:


If a car has M30 or MD8 it is a Dana 36.
If a car has MM4, MN6, or MY6 it is a Dana 44.


This is true for 85-96. 84 is kind of vague, as all early 84's had Dana 36's.

Last edited by ihatebarkingdogs; 04-15-2018 at 09:59 PM.
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Old 04-16-2018, 08:49 AM
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Scarab1988
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Default How to tell a Dana 36 from a Dana 44

Thank you Drew and I. H. B. D.
I'll check that out.
Any idea how much horsepower a Dana 36 , and a Dana 44 can safely handle?
I'd like to boost my LT-1 power by 100-150 horsepower.
I'm not drag racing anymore, but it is fun to go for a rip once in awhile.
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Old 04-16-2018, 09:56 AM
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pacoW
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Originally Posted by Scarab1988 View Post
Thank you Drew and I. H. B. D.

Any idea how much horsepower a Dana 36 , and a Dana 44 can safely handle?
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