Depends, some think not. I think of it as this way - like going from a 8" to 9" rearend....heavier, drains more output but it takes the abuse. How many people would not go to a 9" if they had the chance?
true but you can get a c-4 thats built to handle almost 1000+ so they say, and you still have the lesser drivetrain loss, etc.
but if i had a c-6 id go with that instead of buying a whole new trans
PA SuperComp is rated to 1000, I think thats a stretch but at 600-700 its prob fine. Lifetime warrenty, you pay shipping to and from, but still its peace of mind.
Im at 550 or so, and so far its been flawless and shift nice a firm. Ill know more next yr how tuff it is when I throw 150 more HP at it.
It run the C4 like this, or go to a powerglide. If you have that much power where a C4 is too weak, just step to the PG IMO.
A built c4 will be a better choice than a c6 IMO. C6 is really heavy and drivetrain loss is much more. No doubt the c6 has more potential to handle more power but with all the built c4s these days, not really necessary.
Kevin