How about a good Drag race 904 build discussion
I was just making the comparison that chrysler themselves place more emphasis on beefing the front planet than the rear one. So my thinking is that " maybe" the 3 pinion aluminum 904 planetary would survive and also shed some et as well. The et gain may be small. But small gains here and there can accumulate.
I used to run a 727 in my car with nothing more than a T/A cheeta valve body.best et 11.70
I put in a 904 fully build with aluminum front drum lightened sun shell 2.74 first gear and fully rollerized and a little more converter stall speed. Best et 11.20.
The point of this thread is I wanted to find out if anyone else has tried some other 904 mods.
I have not tried any decent servos in my 904 yet. I have just installed the multi spring return
Spring. Man is that spring stout.
My experience is that there is significant performane to be gained from the transmission.
But it is a fine line between et gain and durability.
Duane