C4 dana 44 upgrades
Thread Starter
Intermediate
Joined: Apr 2018
Posts: 39
Likes: 0
C4 dana 44 upgrades
Hey guys,
I'm out of ideas of where to look, so I thought it would be best to post. I am using a dana 44 irs from a manual 89-91 C4 into another pony car. It currently has 3.03 gears I believe in it.
My delima is I'm looking to put a good amount of power through it, with a tr6060, for roll racing, not from a dig. It's going to have toyo r888 tires as well.
I've seen post of a Tom's custom diff but when I reached out to Tom's they said they dont do customs. I am open to all options.
Thanks!
I'm out of ideas of where to look, so I thought it would be best to post. I am using a dana 44 irs from a manual 89-91 C4 into another pony car. It currently has 3.03 gears I believe in it.
My delima is I'm looking to put a good amount of power through it, with a tr6060, for roll racing, not from a dig. It's going to have toyo r888 tires as well.
I've seen post of a Tom's custom diff but when I reached out to Tom's they said they dont do customs. I am open to all options.
Thanks!
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
[QUOTE=fish2keel;1601119273]Hey guys,
I'm out of ideas of where to look, so I thought it would be best to post. I am using a dana 44 irs from a manual 89-91 C4 into another pony car. It currently has 3.03 gears I believe in it.
Dana 44 8.50 inch gear. IRS required? Gear ratio depends on intent 3.75-4.10 fill most needs. Posi or True Trac again intent. D44 IRS parts are different from straight axle (truck) parts.
I'm out of ideas of where to look, so I thought it would be best to post. I am using a dana 44 irs from a manual 89-91 C4 into another pony car. It currently has 3.03 gears I believe in it.
Dana 44 8.50 inch gear. IRS required? Gear ratio depends on intent 3.75-4.10 fill most needs. Posi or True Trac again intent. D44 IRS parts are different from straight axle (truck) parts.
Thread Starter
Intermediate
Joined: Apr 2018
Posts: 39
Likes: 0
[QUOTE=Kevova;1601121553]
i have heard the straight axle and irs have different parts. I have the IRS in the car based on the needs of the car, so moving to a straight axle isnt a real option at this time.
Are there any places that are doing upgrades still to "bullet proof" the dana 44 IRS?
Hey guys,
I'm out of ideas of where to look, so I thought it would be best to post. I am using a dana 44 irs from a manual 89-91 C4 into another pony car. It currently has 3.03 gears I believe in it.
Dana 44 8.50 inch gear. IRS required? Gear ratio depends on intent 3.75-4.10 fill most needs. Posi or True Trac again intent. D44 IRS parts are different from straight axle (truck) parts.
I'm out of ideas of where to look, so I thought it would be best to post. I am using a dana 44 irs from a manual 89-91 C4 into another pony car. It currently has 3.03 gears I believe in it.
Dana 44 8.50 inch gear. IRS required? Gear ratio depends on intent 3.75-4.10 fill most needs. Posi or True Trac again intent. D44 IRS parts are different from straight axle (truck) parts.
Are there any places that are doing upgrades still to "bullet proof" the dana 44 IRS?
Thread Starter
Intermediate
Joined: Apr 2018
Posts: 39
Likes: 0
Oh that is very sad, I didnt know. The customer service rep said they dont do custom parts for the c4 anymore. That's unfortunate indeed. Unsure where to turn now for upgrades.
Safety Car
Joined: Nov 2008
Posts: 3,717
Likes: 551
From: Seattle Washington
Trackdogg here on this web sight built mine a number of years ago. Steel Billet Caps can be fitted and close attention to detail is pretty much what is done to the IRS Dana 44. Very few parts are interchangeable with the C3,C4,or Viper Dana 44 all three of them are similar in design but that's it. The 4x4 Dana 44's is yet another set of parts. The Dana 44 is well established Family that never had any Twins.
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Le Mans Master
Joined: Apr 2000
Posts: 5,713
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From: Manassas VA
If you do a search under user name, rklessdriver, he did a write up on how to keep the D44 alive. Shows how to limit axle travel, how to check clutch wear, etc. I will try and find the link and post it here latter today.
Thread Starter
Intermediate
Joined: Apr 2018
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Trackdogg here on this web sight built mine a number of years ago. Steel Billet Caps can be fitted and close attention to detail is pretty much what is done to the IRS Dana 44. Very few parts are interchangeable with the C3,C4,or Viper Dana 44 all three of them are similar in design but that's it. The 4x4 Dana 44's is yet another set of parts. The Dana 44 is well established Family that never had any Twins.
Safety Car
Joined: Nov 2008
Posts: 3,717
Likes: 551
From: Seattle Washington
No. The Billet Caps need to be fitted to the Housing. Then once fitted then everything needs to be machined. Its not a simple matter of bolting on stronger Caps. Somebody who has the ability to do this type of machining could also make the Caps. Its not like there are many people interested in having this type of work done, so with little demand, I doubt anybody is making the caps.
Melting Slicks
Joined: Mar 2001
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From: Timra, Sweden
Thread Starter
Intermediate
Joined: Apr 2018
Posts: 39
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No. The Billet Caps need to be fitted to the Housing. Then once fitted then everything needs to be machined. Its not a simple matter of bolting on stronger Caps. Somebody who has the ability to do this type of machining could also make the Caps. Its not like there are many people interested in having this type of work done, so with little demand, I doubt anybody is making the caps.
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
Newman Car Creations, now out of business, made a HD batwing if you could find one. Newman was in to C4 suspension on tri 5 Chevys. Using a waterjet a plate could be fabbed to keep the caps from being forced back; spreading the load on the entire assembly.
Last edited by Kevova; Mar 17, 2020 at 08:10 AM.
Team Owner
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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
Cruise-In VII Veteran
I could never make a D44 last in my C4 with just minimal power! Half shafts, u-joints, and spindles would break with regularity! Eventually went to a solid rear!
Safety Car
Joined: Nov 2008
Posts: 3,717
Likes: 551
From: Seattle Washington
If You search "12 bolt conversion" in the C2 C3 section you will find people who can do it. A 12 bolt conversion also gets new Caps in addition to a lot more. And no, a 12 bolt conversion can not be done to a Dana 44.
