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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 07-28-2013, 08:05 PM   #1
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Trans swap questions

hey guys, I am in the midst of a complete build. My goal is to build my dream vert. They way it should have came from the factory.

Anyway I am getting ready for a Trans swap to a manual transmission. And before I spend the 200 for the trans I just want to make sure. Will a transmission from a 2000 9-3 base vert work on my 99 9-3 vert. I heard there can be some fitment issues around the axle seal area. Any hints and tips greatly appreciated. I have read lots of the threads on swaps, some good info. Another question before I pop the trans in, is there any upgrades or things I should replace on the trans before I put it in.

Thanks for any input guys!
out of all the car forums I am on this is with out a doubt my favorite you guys are always so willing to help with out all the internet bull that usually comes along with forums. just wanted everyone to know how much the assistance is appreciated.
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Old 07-30-2013, 05:17 PM   #2
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So now that I have been looking at transmissions I am even more confused. Is there a trans that is better then the others, Performance wise? Any help in picking a transmission to buy would greatly be appreciated!
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Old 07-30-2013, 06:12 PM   #3
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should be the same.
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Old 08-01-2013, 03:25 AM   #4
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The 2000 trans will fit perfectly into your '99 -- just make sure you get the shift linkage that matches that transmission:

The FM505 (900 and early 9-3) and FM507 (later 9-3) gearboxes use completely different (and not interchangeable) linkage assemblies with different mounting to the transmission.
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Old 08-01-2013, 04:57 AM   #5
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I believe the shift linkage was updated for the '97 900.

As long as you get a trans from a pre-2003 9-3, you'll be fine.
Even an NG trans would be fine but the ratios are slightly different.
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Old 08-01-2013, 11:21 PM   #6
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thanks guys! So get the correct linkage, got it.
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Old 08-02-2013, 07:16 AM   #7
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Hopefully you can get the linkage that comes with the trans you are buying. Obviously you'll need the shift rod and shift housing as well if converting to manual. If it's a parts car, grab the front and rear trans mount and brackets, clutch line, pedal/clutch master cylinder and hose to the reservoir.

Not sure, but you'll likely need a manual specific flywheel. Not sure about axle shafts.

As for better years to get...
In mid 2001 Saab updated a bunch of the internal parts of the trans and switched to a newer synthetic fluid.

If you plan on going big power, you could invest in a Quaife LSD.

Resurface the flywheel and find a shop that's willing to take some weight off of it. Throw in a Viggen clutch as opposed to stock if you plan on upping the power.
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Old 08-02-2013, 07:51 AM   #8
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Thanks for all the info SRP! I will put it to good use!
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Old 08-02-2013, 08:22 AM   #9
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Hopefully you can get the linkage that comes with the trans you are buying.

As for better years to get...
In mid 2001 Saab updated a bunch of the internal parts of the trans and switched to a newer synthetic fluid.
Hence the birth of the aforementioned FM55 507 transmission with it's different shift linkage requirements.

The early NG900's had the FM55 503 with it's notoriously weak linkage.

The later NG900's and early 9-3 have the FM55 505 with updated internals and a better linkage that will fit the earlier 503 box.

The last of the 9-3's have the FM55 507 with additional updates, particularly the synchronizers and it's unique (to our model cars) shift linkage.
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Old 08-02-2013, 08:55 AM   #10
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So you are saying there is a different shift linkage for the 503, 505 AND 507 boxes?
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Old 08-02-2013, 02:52 PM   #11
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So you are saying there is a different shift linkage for the 503, 505 AND 507 boxes?
Yes
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Old 08-02-2013, 03:35 PM   #12
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... Interesting... I just grabbed a linkage out of the junk yard, from a 9-3 of unknown year (prior to '03) to update the linkage in my '95 900...

Which is this one... And looks like it's good for all cars from '94 -'02/'03 (convertible only)

4626321 Genuine Saab - Linkage Assembly - Free Shipping

Yes, the older cars ('97 I think was the linkage year change) had a different style linkage, which was then updated to this one...
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Old 08-03-2013, 07:51 AM   #13
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Do you mean how the linkage meets up on the transmission itself?

The bracket that meets the rear engine mount is usually the big diff.

Also 02 and 03 vert trannys tend to be the stoutest.
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Old 08-04-2013, 03:21 PM   #14
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So I found 2 Tranny's at my local "u-pull it". One is in a 1999 9-3 SE, and the other was a 97 or 96 900 turbo red top. So if I am understanding correctly the 1999 SE trans is the one I want, correct? And If I can find like a 02 or 03 vert that would be even better?
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Old 08-04-2013, 04:37 PM   #15
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the 99 should suit you fine. It will be very difficult to find an 02/03 vert trans.
As long as its got low miles and its a good price, go for it.
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Old 08-05-2013, 07:03 PM   #16
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thanks!
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