550hp/tq -vs- the 2004R? 4L80E?

[Leviathan]

the questions is... can a 2004R hold up to 550HP and 550TQ of a Buick 455?

I've got the overbuilt Buick 455 (i know... an extra 2 cylinders) in my 1979 G body...

I've had my fun with the TH400, and would like an overdrive. GearVendors is not really my thing - was looking at going the 2004R route...

Will it survive? Is the 4L80E worth the extra cost?

 

[chris718]

A properly built 2004r will have no problem transferring that amount of torque to the rear wheels with reliability.I have many behind engines making that kind of power.