Automatic -> Manual, 4spd, 5spd - Saab 900 Bulletin Board - Saabnet.com
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The gearing difference is as Justin described. The 5 speed would be a great improvement, esp for a non-turbo, where the inefficent auto eats hp during acceleration. Of course, you could more easily drop in a complete power plant unit with 5 spd.
Both 4 and 5 speeds have pinion beraings that go bad often. M89+ 5 speeds have a better pinion bearing. You must be sure a healthy 5 spd is installed.
GM can get race prepped 4 speeds. These have a stronger, 1 piece counter-cluster gear, and oversized pinion bearing (also avail for 5-speeds). Changes to primary and final ratios get the engine rpms down a bit, but also spreads the gearing numbers away from the 'closer' stock ratios.
Posts in this Thread:
- Conversion Automatic-Manual, Vladimir, Sun, 7 Jan 2001 20:25:55
- Automatic -> Manual, 4spd, 5spd, Kevin K , Mon, 8 Jan 2001 11:05:47 <-- Viewing This Message
- 4spd vs. 5spd, Justin VanAbrahams , Mon, 8 Jan 2001 03:11:57
- Re: Automatic-Manual Website, Mark J, Mon, 8 Jan 2001 02:28:42
- Can Anyone tell us the URL of the conversion HOWTO on this site?, Vladimir, Mon, 8 Jan 2001 00:12:29
- This site has a conversion how to!, Boris 88SPG, Sun, 7 Jan 2001 21:23:08
- Re: Conversion Automatic-Manual, Ross, Sun, 7 Jan 2001 21:18:23
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