I'm building a 496 blown motor and Ive been trying to find the best drive for my money,I was considering IMCO,however, I have found some threads saying they ere breaking with blown motors with @ 700-800 hp, and they all say that it happens around 20-30hrs. has anyone heard of this.

Been there done that...twice.

Max Machine Works is probably your best bet

I have a pair of the Imco Extreme SC and they are being pushed by a pair of blower motors,never a problem one.

they are my second choice since I hang out at havasu and they are there. SO I think they will be my first now thanks.

hyper how much hp are you pushing

Speedy,
What type of boat and how heavy is it?

what kind of power did it take to brake your back4more?

I just orderd -2 shoties for my 650's want better luck then you had!

800...Prop it way up there so your spinning them as fast as your motors WOT will allow.
Don't run RedLine Oil in them either.

Max Machine Works