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  #1  
Old 01-05-2008, 09:04 AM
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Chevy Cobalt SS Trans

GM F35
Specifications
Type: transverse front wheel drive, five speed manual transaxle.

Engine Range: 2.0L


Max Gearbox Torque:
258 lb.-ft.


Weight:
99 lbs.

Applications: Chevrolet Cobalt SS, Chevrolet HHR SS



The F35 is a Saab-designed five-speed manual transaxle built in Saab’s Gothenburg, Sweden, powertrain plant. This extensively tested manual transmission was originally introduced in the 1984 Saab 9000, and today it is used in the Saab 9-3 and 9-5, Chevrolet Cobalt SS and on various Opel applications.

The F35 features a two-axis conventional transverse layout, fully synchronized gears, and compact packaging. It features higher torque carrying capacity than many other manual transaxles currently in use in North American small cars.

Different versions of the transaxle are available, depending upon application. Both cable and rod shift mechanisms are available, as well as application-specific clutch housings.

Design features include triple-cone synchronizers on 1st and 2nd gears, and single-cone synchronizers for 3rd, 4th, 5th and reverse gears.

A limited-slip differential is available for high-output applications. This torque-sensing differential is an all-mechanical geared unit that uses no clutch packs or preloading to transfer torque from one axle to the other, and torque transfer occurs automatically when one wheel loses traction. Torque transfer also occurs gradually, without steps.


Source: GMinsidenews.com
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Last edited by nugz; 01-08-2008 at 07:39 PM.
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  #2  
Old 01-26-2008, 03:24 AM
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So what would I need to do to take the threshhold beyond 258 lbs of torque? Get the lsd? and if so where can I get one?
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  #3  
Old 03-07-2008, 09:29 AM
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i have the trans with the LSD whats the stats on that?
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  #4  
Old 09-07-2008, 11:34 AM
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if i am upgrading my power band upwards of around 320hp does that mean i am going to have to upgrade the gearbox too?!
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  #5  
Old 09-07-2008, 01:54 PM
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naw theyre plenty of people running over 258 on the stock tranny, clutch and everything.

do you have lsd?
-----Added 7 Sep 2008 at 03:55:27-----
best thing to do is get some motor and tranny mounts and even a tq dampner
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  #6  
Old 09-07-2008, 01:55 PM
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best thing to do is get some motor and tranny mounts and even a tq dampner
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  #7  
Old 09-07-2008, 01:58 PM
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Quote:
Originally Posted by Vampracer View Post
if i am upgrading my power band upwards of around 320hp does that mean i am going to have to upgrade the gearbox too?!
Do you have the LSD Tranny ?
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  #8  
Old 09-07-2008, 04:25 PM
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Quote:
Originally Posted by Chester View Post
Do you have the LSD Tranny ?
if the 2007 model Supercharged SS's come stock with LSDs then yes...i can't find anything about it and i'm not quite sure if they come stock or not.
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  #9  
Old 06-28-2009, 11:38 AM
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i have an 07 cobalt ss and my clutch wont hold for nothin... it jus acts like it gives and there is no pedal or gears after second gear if i spin tires... and its a brand new stock clutch in.. what would the best way to go be?
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  #10  
Old 09-22-2009, 11:22 AM
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Important:

MOST mechanics and even dealers, think Dexron III goes in this transmission. That IS NOT TRUE. The fluid for the F35 (MU3) is Gm part # 21018899. It is a synthetic gear oil, DO NOT RUN DEXRON in this transmission!!! Dexron III is used for the other 5 speed transmissions in the cobalts.

I post this because it was a ***** being persistent on my mechanic, so i hope you dont have to
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