Dana 44 ??????
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From: Lengede
Dana 44 ??????
I'm about to convert from a Dana 36 to a 44 and will be changing to a 4.09 or 4.10 ratio. But I'm a little confused which rear axle I should buy for my '92 Vette.
Some have a ICA and others a IRS designation.Then again there are 4.09 and 4.10 ratios.
This is the only thing I have found out so far.
4.09 45-11 teeth
4.10 41-10 teeth
Which of these 44's ICA/IRS is the best and which gears 4.09/4.10 is stronger or better???
Arnold
Some have a ICA and others a IRS designation.Then again there are 4.09 and 4.10 ratios.
This is the only thing I have found out so far.
4.09 45-11 teeth
4.10 41-10 teeth
Which of these 44's ICA/IRS is the best and which gears 4.09/4.10 is stronger or better???
Arnold
Melting Slicks
Joined: Jul 2004
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From: Chicago Illinois
I dont know brother, but I just want to say you have a awesome set up there. Going to 4.10s is really gonna work great. With drag radials that thing should see awesome 60'#s. You do realize that you have at least 20 more rwhp to free up with full length headers. Who did you use to program your chip and do you have any track results? 
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From: Lengede
I dont know brother, but I just want to say you have a awesome set up there. Going to 4.10s is really gonna work great. With drag radials that thing should see awesome 60'#s. You do realize that you have at least 20 more rwhp to free up with full length headers. Who did you use to program your chip and do you have any track results?
Arnold
Drifting
Joined: Oct 2006
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From: Citrus Heights California
I'd rather have a reply to the rear axle, but thanks for your reply. No, I don't drag race, at least not with my Dana 36. I do all my "racing" on our roads or Autobahn. My Hooker LT's are waiting to be mounted and also a new and bigger cam. I do all programming by myself and all I can say, my Vette is pretty fast.
Arnold
Arnold
Last edited by Kool88vette; Aug 11, 2007 at 07:31 PM.
Safety Car
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From: Houston Texas
89-96 would probably do just fine. IRS(independent rear suspension) is in all c4's 36 or 44's. Ratios can be found in 4.09, 4.10 and 4.11 by different manufactures. You say you race on the Autobahn, these higher gears will limit your top speed. You will run out of revs. You can find good gear sets through Dodge (Mopar) made for the early Vipers that will fit our 44's.
Race Director
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From: O'Fallon Missouri
From what I've heard the 4.09's are a converted regular D44 gearset, they add a sleeve on the pinion shaft to work with our Super D44's. I'm running Dana OEM 4.10's in my D44, the same gears as the Viper uses. The Dana/Viper gears are a pure Super D44 gearset, complete with the D60 size pinion.
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From: The Top of Utah
Originally Posted by vettef6
But I'm a little confused which rear axle I should buy for my '92 Vette.
Some have a ICA and others a IRS designation.
Some have a ICA and others a IRS designation.
Originally Posted by vettef6
Then again there are 4.09 and 4.10 ratios.
This is the only thing I have found out so far.
4.09 45-11 teeth
4.10 41-10 teeth
Which of these 44's ICA/IRS is the best and which gears 4.09/4.10 is stronger or better???
Arnold
This is the only thing I have found out so far.
4.09 45-11 teeth
4.10 41-10 teeth
Which of these 44's ICA/IRS is the best and which gears 4.09/4.10 is stronger or better???
Arnold
RACE ON!!!
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From: Australia
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Le Mans Master
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From: Manassas VA
I suggest you contact Dave (WVZR1) about the Dana 44. He knows more about design, parts availability, what interchanges, etc. then anyone else I have talked to.
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From: Lengede
rodj, you are right in saying I have the best of both worlds with a 4.10. At the moment I rev. 3000 rpm/125 mph in 6th gear. With my ratio in 6th gear, I can't even drive top speed which should be around 192 mph, because the gear ratio is too long. When shifting from 5th at 6400 rpm/182 mph to 6th the rpm drops down to 4200 rpm. So if you know just a little about engines/gear ratios that won't get you any faster.
BTW, just acceleration is of interest to me and not top speed!!!
Arnold
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From: Melbourne Florida
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OK...I got confused like some others...I thought you were doing the normal Dana 36 to 44 swap and that was it...it seems you forgot to mention you are not only swapping in a 44 but a 6 speed tranny as well...now the taller gears make sense...
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From: Lengede
I have already a 6 sp for about over a year!! see sig....
Le Mans Master
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From: Australia
"BTW, just acceleration is of interest to me and not top speed!!!"
Like I said ; best of both worlds.
Accelerate on 4.10's , cruise on 2.00.
Only problem will be off the line traction.
With your mods ,will be able to smoke the tires all the way to 4th
Like I said ; best of both worlds.
Accelerate on 4.10's , cruise on 2.00.
Only problem will be off the line traction.
With your mods ,will be able to smoke the tires all the way to 4th
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From: Lengede
They are really the same thing. IRS is the generic term for any car with an "Independent Rear Suspension. All C2 (1963) and and up Corvettes have an IRS. Dana designates their C4 rear "axles" as the Model 36 ICA and Model 44 ICA rear axles. The "Independent Carrier Assembly" is part of Dana's axle model designation. You can't get a C4 diff that won't fit. If your new diff and the car are on opposite sides of the 1987-1988 year split, the camber adjustment bracket bolts will be a different size. You can drill the holes larger and/or bush the bolt shank.
Chevy never offered gears lower than 3.54:1 for the C4s. Dana made a 4.10 or 4.11 for the 44 ICA as used in the Viper. Any other gears are an adaptation of gears made for other, similar Dana axle models. Besides the gears you've listed, the 4.11 gears are 37-9 teeth. Other than the ease of assembly with the Viper, D44 ICA, gears, the 4.09 with it's 11 tooth pinion is likely to be the strongest.
RACE ON!!!
Chevy never offered gears lower than 3.54:1 for the C4s. Dana made a 4.10 or 4.11 for the 44 ICA as used in the Viper. Any other gears are an adaptation of gears made for other, similar Dana axle models. Besides the gears you've listed, the 4.11 gears are 37-9 teeth. Other than the ease of assembly with the Viper, D44 ICA, gears, the 4.09 with it's 11 tooth pinion is likely to be the strongest.
RACE ON!!!
rodj, off the line traction won't be a problem because this is not the way I accelerate. I stomp on the pedal only when the car is in motion. Why do think my Dana 36 hast lasted so many years??
Arnold
