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#1
09-06-2012, 09:34 PM
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Vega Automatic Overdrive?
I have a 74 Vega and was wondering if there's an automatic transmission that would bolt up to the original 2.3/140cid? I believe what I have now is the TH250 automatic. It's the stock automatic that came with the car, but I'd like to get the darn rpm's down at highway speeds...
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#2
09-07-2012, 12:00 AM
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Re: Vega Automatic Overdrive?
I think your best bet is a THM 200-R4. It was often used in place of the THM 350, which is very similar to your 250 trans.
You would need to fabricate a transmission cooler (aftermarket oil to air would be fine) and lines, since your trans was entirely air-cooled
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#3
09-07-2012, 12:51 AM
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Re: Vega Automatic Overdrive?
The Vega 2.3 liter engine has its own bellhousing flange, no other transmission will fit it. Your choices are either the TH250 or TH350. From personal experience, that 2.3l engine won't have enough power to run an overdrive, anyway.
I am not sure if you can get a bellhousing adapter, if so you could adapt a TH700R4 but you'd have to shorten the driveshaft. As MagicRat said, you'd have to run an external cooler on it. The Vega trans is air cooled and there are no provisions on it for an external cooler, so the radiator does not have a trans cooler internal to it. You might be able to run a later model Monza radiator in it, and run the cooler lines as required.
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1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have.
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