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| Will a A998 fit in a 63 Dart? https://www.slantsix.org/forum/viewtopic.php?t=36040 |
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| Author: | oldiron36 [ Tue Jun 30, 2009 11:22 am ] |
| Post subject: | Will a A998 fit in a 63 Dart? |
I'm not sure what I currently have in there, probably the original factory-type tranny. It is a cable shifter version, with the two cables. Will the A998 fit in the tunnel and work with the cables? I'm guessing not, but want to know for sure. I'm looking for anything that would make this car better, better mileage, safer, quieter, more comfortable, etc. It will be undergoing a complete restoration shortly and I am planning some changes. |
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| Author: | Joshie225 [ Tue Jun 30, 2009 11:38 am ] |
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The A998 is simply a beefed up A904. They are all lever operated rather than cable operated. You can put the clutches and gear train from the 998 into the push-button 904 to make it stronger. Doing so also gets you a larger, stronger input shaft which requires a different torque converter. Unless you are making lots of power it's completely unnecessary to do these upgrades. |
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| Author: | oldiron36 [ Tue Jun 30, 2009 1:19 pm ] |
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That's kinda what I figured. I may just keep the current tranny in there. I got the car from by bother-in-law and i think he does not know much about MoPars. He told me it is a Torqueflite B, not a Baby Torqueflite. I have no idea what he is talking about. He may not either. Anyway, any idea what tranny it actually is? It does have the cable shifters. I am not going to fix it up for racing, so I am not too concerned about strength. I do want to boos the power and MPG a bit, but just to make it more drivable. I am thinking of boosting the compression to around 9.5:1, better cam, and going with 2.5" exhaust. Other than that, basically stock. Anything that will improve highway mileage. I guess I am limited with the selection of transmissions. |
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| Author: | Joshie225 [ Tue Jun 30, 2009 1:58 pm ] |
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The 727 which came behind big blocks and higher output small blocks is the big one. The A904 series is the smaller Torqueflite. The 'baby' 904 was used in 4-cylinder cars like Dodge Colts. We have had numerous discussions on compression ratio, cam selection and exhaust options. You'll find plenty to read using the search function. |
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| Author: | Charrlie_S [ Tue Jun 30, 2009 6:04 pm ] |
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Quote: The A998 is simply a beefed up A904. They are all lever operated rather than cable operated. You can put the clutches and gear train from the 998 into the push-button 904 to make it stronger. .
If I remember correctly, all 998 trans had the low gear ratio 1st gear. This gear train cannot be transplanted into a 65 or older 904. The splines on the gear train are different then the splines on the output shaft (inside the trans). Since the early trans has a totally different tailshaft and housing, it cannot accept the newer 998 tailshaft and housing. However the front section, can be swapped, to give you the "heavier" clutch packs.PS: all 998 trans were a V-8 trans, but the guts can be swapped to a slant six G904 case. |
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| Author: | Joshie225 [ Tue Jun 30, 2009 7:34 pm ] |
| Post subject: | |
Oops, forgot about the main shaft! Only the later 904s/998s had the wide ratio planetaries. |
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| Author: | Walter Lee Jackson [ Sat Jul 04, 2009 3:22 pm ] |
| Post subject: | Will a A998 fit in a 63 Dart? |
Sort of. I have one in my '63 Dart GT convertible. It requires much work, however. 1. The 999 has a lockup torque converter. The pilot is too big to fit in the crankshaft. You'll need to change to the later crankshaft. It's not possible to have a custom converter made that will just bolt on, according to Hughes converters. 2. It's linkage operated, not cable operated. You must install http://www.imperialservices.net/ converter that allows the linkage transmission to be controlled by the push buttons. They don't list it in their online catalog; you have to call. (989) 652-6309. 3. Must use the early linkage transmission tail housing. The housing on the 998 or 999 is too large. Or, you can do what I did: install a Gear Vendors overdrive which comes with its own tail housing. Even it doesn't clear, however, so I had to make adaptors that lowered the cross member 2 inches. Either that or cut hell out of the floor. I don't have pinion angle problems, but YMMV. 4. Don't forget your choice of housing determines what modifications, if any, are necessary for the speedometer. --Walt Jackson |
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| Author: | james longhurst [ Sat Jul 04, 2009 8:43 pm ] |
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I once ran a late model slant and 904 in my '63 Dart with a B+M floorshifter. I seem to recall the floorpan interfering with the gearchange lever on the trans requiring some adjustment with a BFH. I only did it 'cause I had to at the time. -James |
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