C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

D44 swap

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Old Apr 12, 2006 | 07:57 AM
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Default D44 swap

Help will I need a drive shaft from the D44 to swap out the D36 rear end assembly? Of course I am still using the 700R trans. Anyone whos has done that please chime in . Thanks
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Old Apr 12, 2006 | 08:03 AM
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Yes, drive shaft, torque arm from a D44 vette and use the drive shaft yoke from the D36.

I should finish my swap today, I will let you know if I have any problems.
You will also need to maybe change out your speed sensor and drive and driven gears, so your speed will read correct.
I also spent the extra 30 bucks and had the drive shaft from the D44 balanced.

Last edited by vetster86; Apr 12, 2006 at 08:13 AM.
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Old Apr 12, 2006 | 08:47 AM
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I used the D44 driveshaft and C-beam during my swap. IMHO it was the most performance gain for the least amount of work.

Mike
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Old Apr 12, 2006 | 09:06 AM
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Originally Posted by aboatguy
I used the D44 driveshaft and C-beam during my swap. IMHO it was the most performance gain for the least amount of work.

Mike
On my '92 LT1 it made a HUGE Difference when I swapped in the D44 with 3.45gears. (After 3 days of owning the car I was ready to hurl those 2.59s... )
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Old Apr 12, 2006 | 11:22 AM
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Thanks Ya'll and your right about the 2.59s the suck!
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Old Apr 12, 2006 | 11:31 AM
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Originally Posted by aboatguy
IMHO it was the most performance gain for the least amount of work.

Mike
How does installing a bigger, heavier, differential increase performance? That makes no sense. Was there a ratio difference between the new and the old diffs? THAT could cause an increase in performance.

RACE ON!!!
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Old Apr 12, 2006 | 11:40 AM
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Originally Posted by grapeknutz
Help will I need a drive shaft from the D44 to swap out the D36 rear end assembly?
Not necessarily. The nose (pinion) of the 44 protrudes further forward in the car than the 36 did. The 44 rear end cars come with a shorter drive shaft. However, since the differential is solidly mounted, less slip is necessary with the IRS than with a conventionally sprung, live, axle. Often, the old automatic drive shaft will work perfectly well with the 44 swap. On a similar note, it is possible to re-drill and reuse the automatic "C" beam, also.

RACE ON!!!
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Old Apr 13, 2006 | 05:41 PM
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Originally Posted by CFI-EFI
Not necessarily. The nose (pinion) of the 44 protrudes further forward in the car than the 36 did. The 44 rear end cars come with a shorter drive shaft. However, since the differential is solidly mounted, less slip is necessary with the IRS than with a conventionally sprung, live, axle. Often, the old automatic drive shaft will work perfectly well with the 44 swap. On a similar note, it is possible to re-drill and reuse the automatic "C" beam, also.

RACE ON!!!
Gee I was going to ask about that, as the guy at Ginos salvage said that you dont need to drive shaft from the D44 or the "C" beam. He said that will all fit!
Is there any one who done this?
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Old Apr 13, 2006 | 05:58 PM
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Originally Posted by grapeknutz
Gee I was going to ask about that, as the guy at Ginos salvage said that you dont need to drive shaft from the D44 or the "C" beam. He said that will all fit!
Is there any one who done this?
There is a one inch difference in total length......I've only read up on it. If the Dana 44 C beam and drive shaft are included at a reasonable price I would just get them rather than redrill the C beam. Getting the shaft balanced seems like a prudent step also.
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