Tranny Recommendations for 600 HP

Not to pick your build apart, because I love making the most HP and TQ for my money, but that HP range is gonna be real sketchy on the street. To build that kinda power your gonna need a radical cam, really good heads, a big carb, a tall set of final gears, and a high stall converter. By the time you get it all matched perfect your not gonna like it on the street. I have done this many a times thinking I could tame a high HP engine (over 500 hp) and make it streetable. Boy was I highly disappointed every time. I've come to the realization that usually around 450hp maybe 500hp is the most on a street only car. I wish you the best of luck though!

Oh ya on the tranny, the 904 maybe uses less power to turn but you'll be glad you built a 727 instead. The 727 is the strongest hydraulically controlled factory tranny Chrysler has ever produced. Do a little research and you'll prove out my statement. Also, who cares if it takes 15 extra HP to turn it when your engine is turning out over 500hp!

Now if this was drag only car I would say go 904 cause you want to squeeze out every drop of power and put it to the ground. On a street driven car thats gonna see alot of stop and go driving, you want the beefier tranny.