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125C 3speed Trans upgrade to 4 speed Overdrive?
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87CutlassCiera



Joined: 15 Jan 2007
Posts: 12
Location: Riverport Nova Scotia

Posted: Wed Nov 28, 2007 10:52 pm    Post subject: 125C 3speed Trans upgrade to 4 speed Overdrive?  

Ok, I remember hearing that the 2.8 Bellhousing is the same as the 2.5. If this is true, would it be possible to upgrade the 125C 3speed to a 4 speed Overdrive (from a 2.8 engine)? Just looking at ways to up the MPG.
Thanks CRC
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88delta88



Joined: 09 Jun 2003
Posts: 2401
Location: Canada

Posted: Wed Nov 28, 2007 11:02 pm    Post subject: Re: 125C 3speed Trans upgrade to 4 speed Overdrive?  

lots of highway driving? Put on some bigger tires. (and change your speedometer gear) Less rotations of the wheel to achieve the same amount of distance is the end result of the overdrive trans. Not nessesarily good for acceleration, however. Very likely a cheaper alternative to a transmission swap. Not as fancy though ;-)
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87CutlassCiera



Joined: 15 Jan 2007
Posts: 12
Location: Riverport Nova Scotia

Posted: Thu Nov 29, 2007 12:16 am    Post subject: Re: 125C 3speed Trans upgrade to 4 speed Overdrive?  

Well I have a line on an Overdrive Trans so it wouldn't cost me much (get a whole car, 86 Cutlass Ciera 2.8, Loaded), I want to haul the 2.5 anyway and spruce it up a little, she deserves it!
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