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Old 03-05-2018, 10:57 AM   #1
SidewayzAsFck
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Question Need advice: Lsx build>>> Cd009 or T56??

Okay, so i need some advice on what setup is best for my new lsx build. I am parting out my sr20det setup which includes BNIB cd009 aluminum DS, Gktech brackets & mounts, gktech shifter adapter, autotech cd009 adapter plate, SS lines and everything else needed to mate it to a sr20det.

Since I am now going lq4/9 motor, I have to decide whether to keep the cd009 (77k miles on it) & get the adapter pieces for the lsx build or sell everything and buy a tremec t56 transmission.

Some people say that the gears are a bit short in the cd009 for the ls motors (running a 3.6 gear ratio with my 1.5 hlsd) and after looking at a few cd009-lsx adapters it seems like the pricing will add up quickly for both the cd009 & sourcing a t56. So i wanted to feedback on which setup may be best for the money & if the extra cost of the t56 is justified by better fitment/performance.
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Old 03-05-2018, 02:21 PM   #2
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If you're running a 3.6 rear end you'll be fine with the z33 trans gear ratios. I can see them being too short with a 4.08 and the rpms of the v8.
I don't think anyone will say that a T56 performs better than the CD009. Simply not the case.


Want to sell that driveshaft by itself?
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Old 03-05-2018, 02:25 PM   #3
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I have never driven a CD009, however I can say with my T56 and 4.08 gears I enjoy the way the car drives. I think this depends on what hes doing with the car??
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Old 03-05-2018, 02:35 PM   #4
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The gear ratios between the two transmission are strikingly different. LS+T56 on 4.08 seems to drive fine. LS+CD9 on 4.08 is going to have very short usable gear since you'll probably lose a couple thousand rpms compared to a VQ or SR. Thus a longer ring and pinion could be beneficial.
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Old 03-22-2018, 02:52 PM   #5
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Sorry man, I didn’t even realize that someone replied on this. I will be sticking with the cd009 setup and hopefully with the changed gearing it will still be enjoyable to drive. If not then I will have to figure something else out i guess. I appreciate the input and sorry sy90 sold it a bit ago
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Old 03-23-2018, 08:03 AM   #6
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If you're going to shift like an asshole, CD009
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Old 03-23-2018, 08:38 AM   #7
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Look into the CD00A
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Old 03-27-2018, 04:52 PM   #8
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Plug the two trans gear info into an online gear ratio calculator. It'll help you figure out speed to rpm, and max speed in each gear based on redline.

Then you can figure out which trans best meets your needs. Do you want high rpms and slow speeds for autox, or do you want taller gears for road courses/daily driving?
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Old 04-01-2018, 06:42 PM   #9
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Thanks brother, I will definitely look into it
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