If its an automatic, it is a TorqueFlite 904. The rear will be a 7 1/4", either a 2.94 to 1 or 3.21 to 1 ratio. Nice Formula BTW.
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| 64 Valiant Reag end and trans help... https://www.slantsix.org/forum/viewtopic.php?t=10465 |
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| Author: | 7T4MULA [ Tue Sep 21, 2004 9:14 pm ] |
| Post subject: | 64 Valiant Reag end and trans help... |
In the bottom, base ling 4 door, 225 Valiant, what transmission did they have(automatic) 2 speed or 3? if so what kind? And what kind of rear and gears do they have in them? |
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| Author: | Eric W [ Tue Sep 21, 2004 10:20 pm ] |
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If its an automatic, it is a TorqueFlite 904. The rear will be a 7 1/4", either a 2.94 to 1 or 3.21 to 1 ratio. Nice Formula BTW.
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| Author: | 7T4MULA [ Wed Sep 22, 2004 12:34 am ] |
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Quote: If its an automatic, it is a TorqueFlite 904. The rear will be a 7 1/4", either a 2.94 to 1 or 3.21 to 1 ratio. Nice Formula BTW.
Is that a good transmission?Also, would it be a good idea to drop in 4.10 or 3.73 gearing? |
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| Author: | Jeb [ Fri Sep 24, 2004 5:54 pm ] |
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Yes the Torqueflite 904 is a very good tranny. It will last a long time behind a slant. It has very low parasitic power loss also, pretty close to a powerglide. If you want more zoom, install some V-8 904 parts which lowers the first gear down some more. I would not recommend swapping in any gears lower than 3.55 in a street car. My Duster used to have a 3.91 rear under it. Although I enjoyed zoomimg around town and bouncing imports in it, the gas mileage was terrible and with the engine doing @3500 RPM at 60 MPH, it sounded like you were riding in an airplane. Lower gears also means decreased engine and accesory life. I recommend either 2.92 or 3.25 gears out back plus a Super six setup and a cam out of a 70's slant. This will give you pretty good acceleration and decent gas mileage. Remember, it is a six cylinder, so don't expect too much out of it. Nice Firebird, by the way . How many imports have you whipped with it? 
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| Author: | Charrlie_S [ Fri Sep 24, 2004 7:26 pm ] |
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Sorry Jeb. The low ratio first gear set for the 904, was in the late model trans (don't remember what year they started). They can be swapped into the 66 and later trans, if you also use the late model torque converter (67 up). The low ratio gear set cannot be swapped into the 65 and older trans, been there, tried that, won't work. |
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