I have a an 07 crew with a 5.3, 3.42 gears. I will be installing a built 6.0 with a maggie, 3.73 gears, and probably a 3000 stall. What I would like to know is what I should do about the driveshaft. Anticipated rwhp is going to be in the 550 range. Again this is a crew cab.Thanks.

 

leave it alone

 

So you are saying a stock driveshaft is capable of 550 hp.

 

I can think of 4 or 5 trucks here that run the stock shaft with that HP and more.

 

yes, it will be fine.

 

your tranny will be the problem.

 

I have that taking care of. Tranny is definitely going to be beefed up.

 

it will be fine, but start taking it over 100 and its gonna fly out from under you. seen it happen way to many times on 07+Crew cabs.

 

At minimum, find a driveline shop near you and get the stock one removed, inspected, and high-speed balanced. If the stocker can't tolerate what you will be putting through it, the driveline shop should be able to tell you that.

 

that ' OEM driveshaft will blow 'sonner or later' espeacilly over 100MPH . if i were you get a build shaft' with 1350 slip yoke / 1350 u-joints . . besides if they blow. they take parts with them .. and you could damage ur rear-End < mine blew after 130mph . .