904 vs 727

[edward9egan]

right now i have a 904 with a 225 slant 6 i am going to do some performance upgrades. i need to replace the trans no matter what and was wondering if it is better to stick to the 904 or go for the 727.

 

[70aarcuda]

904

 

[Burntorange70]

Is there even such thing as a Slant 727?

 

[Darter6]

Yes,, Taxi's, Trucks,Vans.Some cars on special order. Most I've found were in Vans.

 

[smlveightis]

2 words for you - "rotating mass". Everything in a 727 is bigger than in the 904, which equals more "parasitic drag", or "parasitic power loss".

 

[Clamcake]

I would agree. a 904 shifts the same and at the same points, has the same gear ratios but takes less horsepower to turn. Unless you're going to find 500 ft/lbs of torque and 500 bhp, you would be much better off with a 904.

 

[Clamcake]

Oh, also and probably more important to the budget build. NO NEED FOR FINDING NEW YOKES, DRIVESHAFTS ETC.

 

[edward9egan]

Cool thanks everyone. Last thing, are there any modifications I should do to the trans I have heard of people putting in different gears and things is any of that necessary.

 

[cudamark]

It'll depend on how much horsepower you're going to put through it and what you're going to use the car for. A street car build is going to be different than a drag car build. In their stock form, a 727 is a heavier duty transmission than a 904 but the 904 is the one to build, and after it's done, will be a stronger, lighter, less power-robbing than a stock 727.

 

[fishy68]

If the trans. is in sound shape now just put a Trans-go Tf-2 shift kit in it and you'll be good to go.