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Car Forum / Dodge / Dodge Cars / July 2004

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Changing From a 904G to a 727 in a 71 Valiant

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Spear - 23 Jul 2004 00:01 GMT
have a few questions about swapping a /6 904g with a /6 727. the reason is
that the ring gear on the  torque converter on the 904 is bare and I can get
a FREE 225/6 and 727, so I was thinking about just swapping the trans.

I was wondering how possible this is?
Will I need to replace the drive line with a shorter one?
Will the shift linkage bolt right up?

Changing From a 904G to a 727 in a 71 Valiant
Dodgem440 - 23 Jul 2004 01:09 GMT
All you should need is a shorter drive shaft.
Barry A. Lee

>  have a few questions about swapping a /6 904g with a /6 727. the reason is
> that the ring gear on the  torque converter on the 904 is bare and I can get
[quoted text clipped - 5 lines]
>
> Changing From a 904G to a 727 in a 71 Valiant
Steve - 24 Jul 2004 05:10 GMT
No, you'd also need a different slip-yoke. 727 splines are different
than 904 splines.

> All you should need is a shorter drive shaft.
> Barry A. Lee
[quoted text clipped - 10 lines]
>>
>> Changing From a 904G to a 727 in a 71 Valiant
John Kunkel - 23 Jul 2004 18:46 GMT
> have a few questions about swapping a /6 904g with a /6 727. the reason is
> that the ring gear on the  torque converter on the 904 is bare and I can get
[quoted text clipped - 3 lines]
> Will I need to replace the drive line with a shorter one?
> Will the shift linkage bolt right up?

The 904 and 727 use a different spline on the output shaft so a different
slip yoke will be needed in addition to shortening the drive shaft.
Depending on whether it has a column or console shifter, some pieces of the
shift linkage are different between a 904 and 727 installation. Since the
727 is most likely from a truck, the bottom of the tailhousing may not have
the mounting boss for the console shifter bellcrank support.
Spear - 24 Jul 2004 00:43 GMT
> > have a few questions about swapping a /6 904g with a /6 727. the reason is
> > that the ring gear on the  torque converter on the 904 is bare and I can
[quoted text clipped - 11 lines]
> 727 is most likely from a truck, the bottom of the tailhousing may not have
> the mounting boss for the console shifter bellcrank support.

The 225/727 was pulled out of a dodge dart I think. the car from what I have
been told by the buddy that pulled it the car ran like a bat out of hell(he
just forgot to pull the drive line). it was purchased from an auction to be
scraped.

since it came out of an dodge dart(i think, but it was a car not truck),
would there be that much of a clerance diffrence?
John Kunkel - 24 Jul 2004 20:12 GMT
> > > have a few questions about swapping a /6 904g with a /6 727. the reason
> is
[quoted text clipped - 22 lines]
> since it came out of an dodge dart(i think, but it was a car not truck),
> would there be that much of a clerance diffrence?

Since the '71 V8 A body car (Dart/Valiant) could be equipped with a 727,
there should be no floor clearance issues but the driveline will still need
shortening and the yoke replaced. The 727 is physically larger and this
affects some of the linkage components.
Most of the /6 727's were from trucks and police/taxi car installations and
these weren't usually A body cars, so it's unlikely it came from a Dart
originally.
Locate the part number stamped in the drivers side pan rail just above the
pan gasket and post it here; I can tell you what it originally came in.
 
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