I am adding a magnacharger tvs 1900, arh headers, and possibly a cam to my 2009 ECSC Silverado Z71. I think it has the 4l60 trans and has 3.73 rear end. My question is with these up grades, what do i need to add to my drivetrain to handle 450 to 500 HP and TQ. Any suggestions are appreciated, and please let me know if you need more info in order to help me out.

 

sound pretty sick what your doing, your gonan have to get the tanny built for sure, when u get it built make sure u get a hardened drive shell for the 4l60 the drive shell is a weak point in that tranny, other than that shift kit vette servos the usual, i wouldnt bother with your 3,73s its a good gear, plus if u do change gear remember u have two to change in a 4x4.

 

The G80 rear end is a common weak link in our trucks and I am sure most will recommend a fully built trans from one of our sponsors, either Performabuilt or FLT which both have a proven track record.

 

Built trans and a trutrac should take care of it